Polat Ekinci - Academia.edu (original) (raw)

Papers by Polat Ekinci

Research paper thumbnail of Deri Hastalıklarında Topikal Retinoidlerin Kullanım Rehberi

''Beyaz gomleginle bir laboratuvardaInsanlar icin olebileceksin,Hem de yuzunu bile gormed... more ''Beyaz gomleginle bir laboratuvardaInsanlar icin olebileceksin,Hem de yuzunu bile gormedigin insanlar icin,Hem de hic kimse seni buna zorlamamisken,Hem de en guzel,En gercek seyin yasamak oldugunu bildigin halde’’Nazim Hikmet COVID-19 pandemisinde aramizdan ayrilan tum Azizsaglik sehitlerimize ithaf olunur

Research paper thumbnail of Secondary localized cutaneous amyloidosis is not rare in bowenÂ’s disease and bowenoid papulosis

Turkish Journal of Pathology, 2021

Secondary localized cutaneous amyloidosis is a histopathological finding seen in the dermis, in v... more Secondary localized cutaneous amyloidosis is a histopathological finding seen in the dermis, in various benign, premalignant, and malignant skin conditions, without clinical significance. The real incidence is not known. We aimed to investigate the phenomenon of secondary localized cutaneous amyloidosis in Bowen's disease and Bowenoid papulosis. We retrospectively evaluated the data of all cases with histopathological confirmation of Bowen's disease and Bowenoid papulosis between 2006 and 2017 in our Dermatovenereology and/or Pathology departments. Secondary localized cutaneous amyloidosis was observed in three patients with Bowen's disease (3/52; 5.8%) and in three patients with Bowenoid papulosis (3/18; 16.7%). Herein, we present the demographic, clinical and histopathological features of these six cases of secondary localized cutaneous amyloidosis in detail. Although the occurrence of secondary localized cutaneous amyloidosis in epithelial tumors is a well-known phenomenon, its incidence has not been previously reported in Bowen's disease and Bowenoid papulosis. Therefore, our results indicating a high incidence may be particularly important for Bowenoid papulosis, as its association with secondary localized cutaneous amyloidosis has only been shown in one case before. Moreover, in three of six cases, we histologically observed areas of regression with a marked prominence of amyloid deposition. Remarkably, two of these patients had a history of topical application of destructive agents which reveals a possible etiologic relationship between secondary localized cutaneous amyloidosis and cellular apoptosis/necrosis induced by these external agents.

Research paper thumbnail of Pigmented Paget’s Disease

Journal of Cutaneous Medicine and Surgery, 2021

Research paper thumbnail of COVID‐19‐triggered sarcoidal granulomas mimicking scar sarcoidosis

Journal of the European Academy of Dermatology and Venereology, 2021

Diverse cutaneous manifestations of coronavirus disease-2019 (COVID-19) have been reported includ... more Diverse cutaneous manifestations of coronavirus disease-2019 (COVID-19) have been reported including morbilliform, pernio-like, urticarial, vesicular and papulosquamous eruptions. 1 In the context of association between COVID-19 and sarcoidal granulomas, only one case of sarcoid-like granulomatous

Research paper thumbnail of Clinical characteristics, quality of life and risk factors for severity in palmoplantar pustulosis: a cross‐sectional, multicentre study of 263 patients

Clinical and Experimental Dermatology, 2021

Palmoplantar pustulosis (PPP) is a rare, chronic, inflammatory skin disease characterized by ster... more Palmoplantar pustulosis (PPP) is a rare, chronic, inflammatory skin disease characterized by sterile pustules on palmar or plantar areas. Data on PPP are scarce.

Research paper thumbnail of The impact of COVID ‐19 pandemic on the management of patients with chronic urticaria: An observational two‐center study from Turkey

Dermatologic Therapy, 2020

The Coronavirus Disease 2019 (COVID-19) outbreak significantly affected the clinical practice in ... more The Coronavirus Disease 2019 (COVID-19) outbreak significantly affected the clinical practice in hospitals and the management of many diseases. The aim of this study was to evaluate the effect of pandemic-related factors on the severity and course of chronic urticaria (CU). A total of 194 CU patients who were on regular follow-up, were enrolled in the study. The disease activity was assessed by means of the weekly urticaria activity score (UAS7) and urticaria control test (UCT). Patients were divided into two subgroups according to their disease aggravation as "aggravated" and "non-aggravated". Two groups were compared in terms of demographic, clinical, COVID-19-associated parameters, and parameters related with the effect of COVID-19 pandemic on CU management. The omalizumab use was statistically higher (P = .017), and the systemic corticosteroid use was statistically lower (P = .025) in the "aggravated" group. Adherence to quarantine was significantly lower in the "aggravated" group (P = .027). 173 patients (89.2%) were unable to contact a dermatologist during the pandemic. Among 186 patients who received treatment for CU before the pandemic, 48 (25.8%) did not continue the existing treatment during the pandemic. CU aggravated in one patient with COVID-19 and remained stable in the other. This study showed that CU patients, especially those on omalizumab therapy, had difficulties in attending medical care and even in the maintenance of their existing therapies during the pandemic. Creating novel follow-up and treatment models as well as the increased use of teledermatology might be beneficial in the management of this lifedisturbing condition.

Research paper thumbnail of Secukinumab and acitretin as a combination therapy for three clinical forms of severe psoriasis in multi‐drug refractory patients: A case series of high efficacy and safety profile

Dermatologic Therapy, 2021

Secukinumab, the first monoclonal antibody that inhibits interleukin‐17A, has been shown to have ... more Secukinumab, the first monoclonal antibody that inhibits interleukin‐17A, has been shown to have rapid and long‐lasting efficacy in the treatment of moderate‐to‐severe psoriasis. However, there are still difficult‐to‐treat cases in which even dose‐escalation fails to provide a clinical response. In such cases, combining secukinumab with a conventional systemic agent may be a rational approach. Although methotrexate is most commonly preferred, acitretin may also be considered a good alternative, with its lower hepatotoxic potential. Data are limited regarding the use of combination therapy of secukinumab and acitretin for psoriasis. We herein present three patients with chronic plaque, generalized pustular and erythrodermic psoriasis, respectively, accompanied by multiple comorbidities, in whom skin clearance could not be achieved with several conventional and biologic therapies (including escalated dose regimens of secukinumab in two patients). Alternatively, we used a combination of secukinumab with low‐dose acitretin, which resulted in a complete or almost complete skin clearance in all patients, with no adverse events or increased toxicity. Based on our real‐life clinical experience with those patients, acitretin seems an effective and safe option to be used in combination with secukinumab. Even in patients who are refractory to multiple drugs including escalated doses of secukinumab, the addition of low‐dose acitretin may be helpful in achieving treatment goals, decreasing the need for switching to another biologic therapy.

Research paper thumbnail of Linear syringocystadenoma papilliferum on the retroauricular area associated with nevus sebaceus

Dermatology Online Journal, 2016

Syringocystadenoma papilliferum is a rare cutaneous adnexal tumor that usually arises in the head... more Syringocystadenoma papilliferum is a rare cutaneous adnexal tumor that usually arises in the head and neck region. It may develop de novo or within a nevus sebaceus. Linear syringocystadenoma papilliferum is an uncommon variant of this benign tumor. We report a child with linear retroauricular distribution of syringocystadenoma papilliferum. A background nevus sebaceus was shown histologically. Total excision was curative with no recurrence. An association between the linear variant of syringocystadenoma papilliferum and nevus sebaceus has not been reported previously.

Research paper thumbnail of Comparison of three different dose regimens of methylprednisolone as initial therapy for pemphigus vulgaris of moderate severity: A single‐center retrospective study from Turkey

Australasian Journal of Dermatology, 2021

Currently, no consensus exists on the dosing regimen of corticosteroids in relation to disease se... more Currently, no consensus exists on the dosing regimen of corticosteroids in relation to disease severity in pemphigus vulgaris.

Research paper thumbnail of Cupping therapy as alternative medicine turns into a trigger of disease via the Koebner phenomenon: A case report of Hijama‐induced psoriasis and review of the literature

Dermatologic Therapy, 2020

Each author has made a substantial contribution to the conception and design of the study, acquis... more Each author has made a substantial contribution to the conception and design of the study, acquisition of data, analysis, interpretation of data, and the final version of the article. The authors had no writing assistance.

Research paper thumbnail of Infliximab for the treatment of recalcitrant generalized pustular psoriasis of pregnancy: Report of a challenging case

Dermatologic Therapy, 2020

Running short title: Recalcitrant pustular psoriasis of pregnancy Word count: 1379Number of figur... more Running short title: Recalcitrant pustular psoriasis of pregnancy Word count: 1379Number of figures: 2 Number of tables: 1 Number of references: 13 Funding sources: None Conflict of interest disclosure: The authors have no conflict of interest to declare.

Research paper thumbnail of An update on cutaneous melanoma in Turkey: evaluation of 19-year data in a single tertiary centre and review of the literature

Journal of the European Academy of Dermatology and Venereology, 2016

Background Information on frequency of melanoma and its clinicopathological subtypes derived from... more Background Information on frequency of melanoma and its clinicopathological subtypes derived from dermatology clinics in Turkey is limited. Objective As data about melanoma show clear differences due to geographic and ethnic distribution, we scrutinized the rich data of our dermatology centre in Istanbul. Methods Consecutive patients diagnosed with melanoma in a tertiary dermatology clinic during the last 19 years were retrospectively investigated about the clinical presentation of the skin lesions during admission, frequency of subtypes and localization of the tumour. Results There were 227 patients with melanoma showing five different clinical presentations: 200 of them had totally 207 primary cutaneous melanoma (PCM) lesions, nine had PCM lesions associated with metastatic skin lesions, three presented with local recurrence, eight with only skin metastases and seven with regressed skin melanoma following systemic melanoma metastases. Histologically, 23.19% of the PCM lesions were intraepidermal (in situ) and Breslow thickness was less than 1 mm in 30.9% of the patients with invasive melanoma. The most common subtype was superficial spreading melanoma (SSM) (37.19%), followed by lentigo malignant melanoma (LMM) (31.4%), acral lentiginous melanoma (ALM) (19.32%) and nodular melanoma (NM) (6.76%). Head and neck region was the most common (34.78%) localization of PCM lesions. Conclusions Different clinical presentations, including various types of cutaneous melanoma metastases, were seen. However, a great proportion of our patients were relatively early diagnosed, either having an in situ or an invasive PCM with a Breslow thickness ≤1 mm. Even though SSM was the most common subtype of PCM in our series, its rate was lower compared to many European countries. Furthermore, the rate of NM subtype was also low, while LMM and ALM rates were higher in comparison to studies originating from European countries. This striking discrepancy requires further studies to explain the probable causes.

Research paper thumbnail of Fibromatous lesion of the scalp: is it an underestimated sign of tuberous sclerosis?

Journal of the European Academy of Dermatology and Venereology, 2016

Research paper thumbnail of Scar sarcoidosis: 11 patients with variable clinical features and invariable pulmonary involvement

Clinical and Experimental Dermatology, 2019

Scar sarcoidosis: 11 patients with variable clinical features and invariable pulmonary involvement

Research paper thumbnail of Psoriasiform skin eruption in a patient receiving certolizumab-pegol for ankylosing spondylitis: Report of a case and review of the literature

Dermatologic Therapy, 2018

Certolizumab-pegol is the first and only pegylated TNF-α antagonist approved in the treatment of ... more Certolizumab-pegol is the first and only pegylated TNF-α antagonist approved in the treatment of Crohn's disease, rheumatoid arthritis, psoriatic arthritis and ankylosing spondylitis. We herein present a case of certolizumab-pegol induced generalized psoriasiform eruption in a patient with ankylosing spondylitis. The diagnosis was based on typical clinical and histopathological findings and further confirmed with Naranjo Adverse Drug Reaction Probability Scale which revealed a total score of nine supporting a definite causal relationship between the drug and skin eruption.

Research paper thumbnail of Long-Term Efficacy and Safety of Ustekinumab for Crohn’s Disease: Results From Im-Uniti Long-Term Extension Through two Years

Research paper thumbnail of The clinical spectrum of xanthomatous lesions of the eyelids

International Journal of Dermatology, 2017

Yellowish papules, nodules, or plaques, namely "xanthomatous" lesions, may be seen on the eyelids... more Yellowish papules, nodules, or plaques, namely "xanthomatous" lesions, may be seen on the eyelids in the course of various disorders. The prototype is "xanthelasma palpebrarum" (XP) that is localized only to the eyelids and may be associated with hyperlipidemia. On the other hand, different types of normolipemic disorders may also cause xanthomatous eyelid lesions. Among these, Langerhans cell histiocytosis, diffuse normolipemic xanthoma, and non-Langerhans cell histiocytoses (papular xanthoma, juvenile xanthogranuloma, xanthoma disseminatum, adult-onset xanthogranuloma, adult-onset asthma and periocular xanthogranuloma, necrobiotic xanthogranuloma, Erdheim-Chester disease, Rosai-Dorfman disease, and reticulohistiocytosis) can be listed. The eyelid findings of this heterogeneous group of disorders are challenging to differentiate from each other due to common clinical aspects that may even sometimes mimic XP. Nodularity, induration, ulceration, diffuse eyelid involvement, and extension from eyelids to the neighboring skin may represent the clinical features of xanthomatous lesions other than XP. It is necessary to obtain a thorough history and exclude XP and then perform detailed dermatological and systemic examination, biopsy for histopathologic confirmation, and appropriate specific imaging screens. As some of the conditions may be associated with other systemic disorders, especially malignancies, the differentiation of xanthomatous eyelid lesions has a critical importance, and clinical signs can be guiding.

Research paper thumbnail of Lichen myxedematosus: eine Fallserie mit Schwerpunkt auf klinischen Merkmalen, Krankheitsassoziationen und Behandlung

JDDG: Journal der Deutschen Dermatologischen Gesellschaft, 2017

Research paper thumbnail of Lichen myxedematosus: a case series focusing on clinical features, disease associations, and management

JDDG: Journal der Deutschen Dermatologischen Gesellschaft, 2017

Research paper thumbnail of Vernachlässigte klinische Merkmale der follikulotropen Mycosis fungoides: eine große klinische Fallserie

JDDG: Journal der Deutschen Dermatologischen Gesellschaft, 2017

Hintergrund und Ziel: Als seltene Form der Mycosis fungoides (MF), ist die follikulotrope MF (FMF... more Hintergrund und Ziel: Als seltene Form der Mycosis fungoides (MF), ist die follikulotrope MF (FMF) durch ein breites Spektrum klinischer Symptome gekennzeichnet. Dazu gehören, neben den vorherrschenden follikulären Läsionen, auch viele atypische Manifestationen. Das Ziel der vorliegenden Studie war eine klinische Bewertung von FMF-Patienten, unter besonderer Berücksichtigung von vernachlässigten dermatologischen Merkmalen. Patienten und Methodik: Insgesamt wurden 27 FMF-Patienten aus dem 572 Patienten umfassenden MF-Register unserer Abteilung retrospektiv bezüglich ihrer Demographie sowie der klinischen Merkmale, Behandlungsformen, Nachsorge und Therapieergebnisse bewertet. Ergebnisse: Neben den bekannten klinischen Symptomen der FMF fanden wir Lichen-spinulosus-artige Läsionen mit begleitender Hypopigmentierung (n = 3) und Alopezie (n = 2), infiltrierte/erhabene, erythematöse Plaques im Gesicht, die zunächst als Lupus tumidus angesehen wurden (n = 2), pseudotumorale Läsionen, die klinisch eine MF im Tumorstadium vortäuschten (n = 1), dauerhafte Exkoriationen (n = 1), erythematöse, Rosazea-artige Papeln im Gesicht (n = 1) sowie kuppelförmige, asymptomatische, mit Muzin gefüllte (in der Histologie) Papeln/Knoten (n = 2), die andere krankheitsbedingte Läsionen überlagerten. Es kamen mehrere Therapieansätze mit unterschiedlichem Ergebnis zur Anwendung. Acht (29,6 %) Patienten hatten FMF im Spätstadium. Schlussfolgerungen: Das Bewusstsein für vernachlässigte klinische Symptome kann wesentlich dazu beitragen, verspätete Diagnosen dieser aggressiven MF-Variante zu verringern.

Research paper thumbnail of Deri Hastalıklarında Topikal Retinoidlerin Kullanım Rehberi

''Beyaz gomleginle bir laboratuvardaInsanlar icin olebileceksin,Hem de yuzunu bile gormed... more ''Beyaz gomleginle bir laboratuvardaInsanlar icin olebileceksin,Hem de yuzunu bile gormedigin insanlar icin,Hem de hic kimse seni buna zorlamamisken,Hem de en guzel,En gercek seyin yasamak oldugunu bildigin halde’’Nazim Hikmet COVID-19 pandemisinde aramizdan ayrilan tum Azizsaglik sehitlerimize ithaf olunur

Research paper thumbnail of Secondary localized cutaneous amyloidosis is not rare in bowenÂ’s disease and bowenoid papulosis

Turkish Journal of Pathology, 2021

Secondary localized cutaneous amyloidosis is a histopathological finding seen in the dermis, in v... more Secondary localized cutaneous amyloidosis is a histopathological finding seen in the dermis, in various benign, premalignant, and malignant skin conditions, without clinical significance. The real incidence is not known. We aimed to investigate the phenomenon of secondary localized cutaneous amyloidosis in Bowen's disease and Bowenoid papulosis. We retrospectively evaluated the data of all cases with histopathological confirmation of Bowen's disease and Bowenoid papulosis between 2006 and 2017 in our Dermatovenereology and/or Pathology departments. Secondary localized cutaneous amyloidosis was observed in three patients with Bowen's disease (3/52; 5.8%) and in three patients with Bowenoid papulosis (3/18; 16.7%). Herein, we present the demographic, clinical and histopathological features of these six cases of secondary localized cutaneous amyloidosis in detail. Although the occurrence of secondary localized cutaneous amyloidosis in epithelial tumors is a well-known phenomenon, its incidence has not been previously reported in Bowen's disease and Bowenoid papulosis. Therefore, our results indicating a high incidence may be particularly important for Bowenoid papulosis, as its association with secondary localized cutaneous amyloidosis has only been shown in one case before. Moreover, in three of six cases, we histologically observed areas of regression with a marked prominence of amyloid deposition. Remarkably, two of these patients had a history of topical application of destructive agents which reveals a possible etiologic relationship between secondary localized cutaneous amyloidosis and cellular apoptosis/necrosis induced by these external agents.

Research paper thumbnail of Pigmented Paget’s Disease

Journal of Cutaneous Medicine and Surgery, 2021

Research paper thumbnail of COVID‐19‐triggered sarcoidal granulomas mimicking scar sarcoidosis

Journal of the European Academy of Dermatology and Venereology, 2021

Diverse cutaneous manifestations of coronavirus disease-2019 (COVID-19) have been reported includ... more Diverse cutaneous manifestations of coronavirus disease-2019 (COVID-19) have been reported including morbilliform, pernio-like, urticarial, vesicular and papulosquamous eruptions. 1 In the context of association between COVID-19 and sarcoidal granulomas, only one case of sarcoid-like granulomatous

Research paper thumbnail of Clinical characteristics, quality of life and risk factors for severity in palmoplantar pustulosis: a cross‐sectional, multicentre study of 263 patients

Clinical and Experimental Dermatology, 2021

Palmoplantar pustulosis (PPP) is a rare, chronic, inflammatory skin disease characterized by ster... more Palmoplantar pustulosis (PPP) is a rare, chronic, inflammatory skin disease characterized by sterile pustules on palmar or plantar areas. Data on PPP are scarce.

Research paper thumbnail of The impact of COVID ‐19 pandemic on the management of patients with chronic urticaria: An observational two‐center study from Turkey

Dermatologic Therapy, 2020

The Coronavirus Disease 2019 (COVID-19) outbreak significantly affected the clinical practice in ... more The Coronavirus Disease 2019 (COVID-19) outbreak significantly affected the clinical practice in hospitals and the management of many diseases. The aim of this study was to evaluate the effect of pandemic-related factors on the severity and course of chronic urticaria (CU). A total of 194 CU patients who were on regular follow-up, were enrolled in the study. The disease activity was assessed by means of the weekly urticaria activity score (UAS7) and urticaria control test (UCT). Patients were divided into two subgroups according to their disease aggravation as "aggravated" and "non-aggravated". Two groups were compared in terms of demographic, clinical, COVID-19-associated parameters, and parameters related with the effect of COVID-19 pandemic on CU management. The omalizumab use was statistically higher (P = .017), and the systemic corticosteroid use was statistically lower (P = .025) in the "aggravated" group. Adherence to quarantine was significantly lower in the "aggravated" group (P = .027). 173 patients (89.2%) were unable to contact a dermatologist during the pandemic. Among 186 patients who received treatment for CU before the pandemic, 48 (25.8%) did not continue the existing treatment during the pandemic. CU aggravated in one patient with COVID-19 and remained stable in the other. This study showed that CU patients, especially those on omalizumab therapy, had difficulties in attending medical care and even in the maintenance of their existing therapies during the pandemic. Creating novel follow-up and treatment models as well as the increased use of teledermatology might be beneficial in the management of this lifedisturbing condition.

Research paper thumbnail of Secukinumab and acitretin as a combination therapy for three clinical forms of severe psoriasis in multi‐drug refractory patients: A case series of high efficacy and safety profile

Dermatologic Therapy, 2021

Secukinumab, the first monoclonal antibody that inhibits interleukin‐17A, has been shown to have ... more Secukinumab, the first monoclonal antibody that inhibits interleukin‐17A, has been shown to have rapid and long‐lasting efficacy in the treatment of moderate‐to‐severe psoriasis. However, there are still difficult‐to‐treat cases in which even dose‐escalation fails to provide a clinical response. In such cases, combining secukinumab with a conventional systemic agent may be a rational approach. Although methotrexate is most commonly preferred, acitretin may also be considered a good alternative, with its lower hepatotoxic potential. Data are limited regarding the use of combination therapy of secukinumab and acitretin for psoriasis. We herein present three patients with chronic plaque, generalized pustular and erythrodermic psoriasis, respectively, accompanied by multiple comorbidities, in whom skin clearance could not be achieved with several conventional and biologic therapies (including escalated dose regimens of secukinumab in two patients). Alternatively, we used a combination of secukinumab with low‐dose acitretin, which resulted in a complete or almost complete skin clearance in all patients, with no adverse events or increased toxicity. Based on our real‐life clinical experience with those patients, acitretin seems an effective and safe option to be used in combination with secukinumab. Even in patients who are refractory to multiple drugs including escalated doses of secukinumab, the addition of low‐dose acitretin may be helpful in achieving treatment goals, decreasing the need for switching to another biologic therapy.

Research paper thumbnail of Linear syringocystadenoma papilliferum on the retroauricular area associated with nevus sebaceus

Dermatology Online Journal, 2016

Syringocystadenoma papilliferum is a rare cutaneous adnexal tumor that usually arises in the head... more Syringocystadenoma papilliferum is a rare cutaneous adnexal tumor that usually arises in the head and neck region. It may develop de novo or within a nevus sebaceus. Linear syringocystadenoma papilliferum is an uncommon variant of this benign tumor. We report a child with linear retroauricular distribution of syringocystadenoma papilliferum. A background nevus sebaceus was shown histologically. Total excision was curative with no recurrence. An association between the linear variant of syringocystadenoma papilliferum and nevus sebaceus has not been reported previously.

Research paper thumbnail of Comparison of three different dose regimens of methylprednisolone as initial therapy for pemphigus vulgaris of moderate severity: A single‐center retrospective study from Turkey

Australasian Journal of Dermatology, 2021

Currently, no consensus exists on the dosing regimen of corticosteroids in relation to disease se... more Currently, no consensus exists on the dosing regimen of corticosteroids in relation to disease severity in pemphigus vulgaris.

Research paper thumbnail of Cupping therapy as alternative medicine turns into a trigger of disease via the Koebner phenomenon: A case report of Hijama‐induced psoriasis and review of the literature

Dermatologic Therapy, 2020

Each author has made a substantial contribution to the conception and design of the study, acquis... more Each author has made a substantial contribution to the conception and design of the study, acquisition of data, analysis, interpretation of data, and the final version of the article. The authors had no writing assistance.

Research paper thumbnail of Infliximab for the treatment of recalcitrant generalized pustular psoriasis of pregnancy: Report of a challenging case

Dermatologic Therapy, 2020

Running short title: Recalcitrant pustular psoriasis of pregnancy Word count: 1379Number of figur... more Running short title: Recalcitrant pustular psoriasis of pregnancy Word count: 1379Number of figures: 2 Number of tables: 1 Number of references: 13 Funding sources: None Conflict of interest disclosure: The authors have no conflict of interest to declare.

Research paper thumbnail of An update on cutaneous melanoma in Turkey: evaluation of 19-year data in a single tertiary centre and review of the literature

Journal of the European Academy of Dermatology and Venereology, 2016

Background Information on frequency of melanoma and its clinicopathological subtypes derived from... more Background Information on frequency of melanoma and its clinicopathological subtypes derived from dermatology clinics in Turkey is limited. Objective As data about melanoma show clear differences due to geographic and ethnic distribution, we scrutinized the rich data of our dermatology centre in Istanbul. Methods Consecutive patients diagnosed with melanoma in a tertiary dermatology clinic during the last 19 years were retrospectively investigated about the clinical presentation of the skin lesions during admission, frequency of subtypes and localization of the tumour. Results There were 227 patients with melanoma showing five different clinical presentations: 200 of them had totally 207 primary cutaneous melanoma (PCM) lesions, nine had PCM lesions associated with metastatic skin lesions, three presented with local recurrence, eight with only skin metastases and seven with regressed skin melanoma following systemic melanoma metastases. Histologically, 23.19% of the PCM lesions were intraepidermal (in situ) and Breslow thickness was less than 1 mm in 30.9% of the patients with invasive melanoma. The most common subtype was superficial spreading melanoma (SSM) (37.19%), followed by lentigo malignant melanoma (LMM) (31.4%), acral lentiginous melanoma (ALM) (19.32%) and nodular melanoma (NM) (6.76%). Head and neck region was the most common (34.78%) localization of PCM lesions. Conclusions Different clinical presentations, including various types of cutaneous melanoma metastases, were seen. However, a great proportion of our patients were relatively early diagnosed, either having an in situ or an invasive PCM with a Breslow thickness ≤1 mm. Even though SSM was the most common subtype of PCM in our series, its rate was lower compared to many European countries. Furthermore, the rate of NM subtype was also low, while LMM and ALM rates were higher in comparison to studies originating from European countries. This striking discrepancy requires further studies to explain the probable causes.

Research paper thumbnail of Fibromatous lesion of the scalp: is it an underestimated sign of tuberous sclerosis?

Journal of the European Academy of Dermatology and Venereology, 2016

Research paper thumbnail of Scar sarcoidosis: 11 patients with variable clinical features and invariable pulmonary involvement

Clinical and Experimental Dermatology, 2019

Scar sarcoidosis: 11 patients with variable clinical features and invariable pulmonary involvement

Research paper thumbnail of Psoriasiform skin eruption in a patient receiving certolizumab-pegol for ankylosing spondylitis: Report of a case and review of the literature

Dermatologic Therapy, 2018

Certolizumab-pegol is the first and only pegylated TNF-α antagonist approved in the treatment of ... more Certolizumab-pegol is the first and only pegylated TNF-α antagonist approved in the treatment of Crohn's disease, rheumatoid arthritis, psoriatic arthritis and ankylosing spondylitis. We herein present a case of certolizumab-pegol induced generalized psoriasiform eruption in a patient with ankylosing spondylitis. The diagnosis was based on typical clinical and histopathological findings and further confirmed with Naranjo Adverse Drug Reaction Probability Scale which revealed a total score of nine supporting a definite causal relationship between the drug and skin eruption.

Research paper thumbnail of Long-Term Efficacy and Safety of Ustekinumab for Crohn’s Disease: Results From Im-Uniti Long-Term Extension Through two Years

Research paper thumbnail of The clinical spectrum of xanthomatous lesions of the eyelids

International Journal of Dermatology, 2017

Yellowish papules, nodules, or plaques, namely "xanthomatous" lesions, may be seen on the eyelids... more Yellowish papules, nodules, or plaques, namely "xanthomatous" lesions, may be seen on the eyelids in the course of various disorders. The prototype is "xanthelasma palpebrarum" (XP) that is localized only to the eyelids and may be associated with hyperlipidemia. On the other hand, different types of normolipemic disorders may also cause xanthomatous eyelid lesions. Among these, Langerhans cell histiocytosis, diffuse normolipemic xanthoma, and non-Langerhans cell histiocytoses (papular xanthoma, juvenile xanthogranuloma, xanthoma disseminatum, adult-onset xanthogranuloma, adult-onset asthma and periocular xanthogranuloma, necrobiotic xanthogranuloma, Erdheim-Chester disease, Rosai-Dorfman disease, and reticulohistiocytosis) can be listed. The eyelid findings of this heterogeneous group of disorders are challenging to differentiate from each other due to common clinical aspects that may even sometimes mimic XP. Nodularity, induration, ulceration, diffuse eyelid involvement, and extension from eyelids to the neighboring skin may represent the clinical features of xanthomatous lesions other than XP. It is necessary to obtain a thorough history and exclude XP and then perform detailed dermatological and systemic examination, biopsy for histopathologic confirmation, and appropriate specific imaging screens. As some of the conditions may be associated with other systemic disorders, especially malignancies, the differentiation of xanthomatous eyelid lesions has a critical importance, and clinical signs can be guiding.

Research paper thumbnail of Lichen myxedematosus: eine Fallserie mit Schwerpunkt auf klinischen Merkmalen, Krankheitsassoziationen und Behandlung

JDDG: Journal der Deutschen Dermatologischen Gesellschaft, 2017

Research paper thumbnail of Lichen myxedematosus: a case series focusing on clinical features, disease associations, and management

JDDG: Journal der Deutschen Dermatologischen Gesellschaft, 2017

Research paper thumbnail of Vernachlässigte klinische Merkmale der follikulotropen Mycosis fungoides: eine große klinische Fallserie

JDDG: Journal der Deutschen Dermatologischen Gesellschaft, 2017

Hintergrund und Ziel: Als seltene Form der Mycosis fungoides (MF), ist die follikulotrope MF (FMF... more Hintergrund und Ziel: Als seltene Form der Mycosis fungoides (MF), ist die follikulotrope MF (FMF) durch ein breites Spektrum klinischer Symptome gekennzeichnet. Dazu gehören, neben den vorherrschenden follikulären Läsionen, auch viele atypische Manifestationen. Das Ziel der vorliegenden Studie war eine klinische Bewertung von FMF-Patienten, unter besonderer Berücksichtigung von vernachlässigten dermatologischen Merkmalen. Patienten und Methodik: Insgesamt wurden 27 FMF-Patienten aus dem 572 Patienten umfassenden MF-Register unserer Abteilung retrospektiv bezüglich ihrer Demographie sowie der klinischen Merkmale, Behandlungsformen, Nachsorge und Therapieergebnisse bewertet. Ergebnisse: Neben den bekannten klinischen Symptomen der FMF fanden wir Lichen-spinulosus-artige Läsionen mit begleitender Hypopigmentierung (n = 3) und Alopezie (n = 2), infiltrierte/erhabene, erythematöse Plaques im Gesicht, die zunächst als Lupus tumidus angesehen wurden (n = 2), pseudotumorale Läsionen, die klinisch eine MF im Tumorstadium vortäuschten (n = 1), dauerhafte Exkoriationen (n = 1), erythematöse, Rosazea-artige Papeln im Gesicht (n = 1) sowie kuppelförmige, asymptomatische, mit Muzin gefüllte (in der Histologie) Papeln/Knoten (n = 2), die andere krankheitsbedingte Läsionen überlagerten. Es kamen mehrere Therapieansätze mit unterschiedlichem Ergebnis zur Anwendung. Acht (29,6 %) Patienten hatten FMF im Spätstadium. Schlussfolgerungen: Das Bewusstsein für vernachlässigte klinische Symptome kann wesentlich dazu beitragen, verspätete Diagnosen dieser aggressiven MF-Variante zu verringern.