Atul Taneja | Hospital Israelita Albert Einstein (original) (raw)

Papers by Atul Taneja

Research paper thumbnail of Correction to: Upper extremity infection: imaging features with focus on magnetic resonance imaging

Skeletal Radiology, Jan 3, 2024

Research paper thumbnail of Differential Diagnosis of Facet Joint Disorders

Radiographics, Mar 1, 2021

Spinal pain due to facet joint disease is difficult to diagnose since the clinical history and ph... more Spinal pain due to facet joint disease is difficult to diagnose since the clinical history and physical examination findings are usually nonspecific. Facet joint disorders have a wide range of causes and, because of the potential for chronic back pain and disability, an accurate diagnosis is essential. The most frequent cause of pain in facet joints is osteoarthritis, which can be assessed at radiography, CT, or MRI. Ganglion and synovial cysts of the facet joints can cause compressive symptoms of adjacent structures, especially radiculopathy, lower back pain, and sensory or motor deficits. In ankylosing spondylitis, imaging findings of the facet joints are useful not only for diagnosis but also for monitoring structural changes. In septic arthritis of the facet joints, an early diagnosis at MRI is essential. Gout and metabolic diseases are best evaluated at dual-energy CT, which allows the depiction of crystals. Traumatic dislocations of facet joints are usually unstable injuries that require internal reduction, fixation, and fusion and can be well assessed at CT with three-dimensional reconstructions. Facet joint neoplasms like osteoid osteoma, plasmacytoma, tenosynovial giant cell tumor, and osteochondroma are best evaluated at CT or MRI. The authors provide an overview of key imaging features of the most common facet joint disorders along with anatomic tips and illustrative cases. Acknowledging key imaging findings for the differential diagnosis of facet joint disorders plays a crucial role in the diagnostic accuracy and proper treatment approach for such entities. Online supplemental material is available for this article. ©RSNA, 2021.

Research paper thumbnail of Caudal duplication syndrome

Arquivos De Neuro-psiquiatria, Sep 1, 2009

Research paper thumbnail of Imaging features of the postoperative spine: a guide to basic understanding of spine surgical procedures

Insights Into Imaging, Jun 6, 2023

Spinal surgical procedures are becoming more common over the years, and imaging studies can be re... more Spinal surgical procedures are becoming more common over the years, and imaging studies can be requested in the postoperative setting, such as a baseline study when implants are used, or when there is a new postoperative issue reported by the patient or even as routine surveillance. Therefore, it helps the surgeon in the appropriate management of cases. In this context, there is increasing importance of the radiologist in the adequate interpretation of postoperative images, as well as in the choice of the most appropriate modality for each case, especially among radiographs, computed tomography, magnetic resonance imaging and nuclear medicine. It is essential to be familiar with the main types of surgical techniques and imaging characteristics of each one, including the type and correct positioning of hardware involved, to differentiate normal and abnormal postoperative appearances. The purpose of this pictorial essay is to illustrate and discuss the more frequently used spine surgical interventions and their imaging characteristics, with an emphasis on classical decompression and fusion/stabilization procedures. • Plain radiographs remain the main modality for baseline, dynamic evaluation, and follow-ups. • CT is the method of choice for assessing bone fusion, hardware integrity and loosening. • MRI should be used to evaluate bone marrow and soft tissue complications. • Radiologists should be familiar with most performed spinal procedures in order to differentiate normal and abnormal.

Research paper thumbnail of Comparison of the diagnostic accuracy of 99 m-Tc-MDP bone scintigraphy and 18 F-FDG PET/CT for the detection of skeletal metastases

Acta Radiologica, Dec 22, 2014

Fluorine-18-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT) is c... more Fluorine-18-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT) is commonly performed for cancer staging, as it can detect metastatic disease in multiple organ systems. However, there has been some controversy in the scientific literature when comparing FDG PET/CT and technetium-99 m-bone scintigraphy (bone scan) for the detection of skeletal metastases. To compare the accuracy of FDG PET/CT with bone scan for the detection of skeletal metastases. The study group comprised 202 adult cancer patients who underwent both FDG PET/CT and bone scan within 31 days for staging. Bone scans and FDG PET/CT were evaluated by two musculoskeletal radiologists for the presence and location of skeletal metastatic disease. Confirmation of the final diagnosis was based on the CT or magnetic resonance imaging (MRI) appearance, follow-up imaging, or histology. The sensitivity, specificity, and accuracy for detecting skeletal metastatic disease of FDG PET/CT were 97%, 98%, and 98%, respectively, and of bone scan were 83%, 98%, and 93%, respectively. The lesions that bone scan most commonly missed were located in the pelvis, spine, and sacrum. FDG PET/CT missed mostly lesions that were outside of the field of view, but in all of these cases the patient had additional sites of skeletal metastatic disease. Bone scan falsely identified six metastatic lesions and FDG PET/CT falsely identified three metastatic lesions. FDG PET/CT is an accurate technique for detection of skeletal metastases, and is superior to bone scan, especially in the spine and pelvis.

Research paper thumbnail of Esthesioneuroblastoma

Arquivos De Neuro-psiquiatria, Sep 1, 2009

Esthesioneuroblastoma (ENB) is a rare tumor that usually occurs in young men, with a second peak ... more Esthesioneuroblastoma (ENB) is a rare tumor that usually occurs in young men, with a second peak at the age of 50-60 years 1 . Characteristic imaging features include origin from olfactory epithelium high in the nasal cavity and contrast enhancement either by computed tomography (CT) or magnetic resonance imaging (MRI) 2,3 . We report a patient with persistent nasal obstruction and epistaxis, submitted to biopsy and endoscopic resection of an esthesioneuroblastoma with extension to ethmoidal air cells.

Research paper thumbnail of Is Biopsying the Paravertebral Soft Tissue as Effective as Biopsying the Disk or Vertebral Endplate? 10-Year Retrospective Review of CT-Guided Biopsy of Diskitis-Osteomyelitis

American Journal of Roentgenology, Jul 1, 2015

The purpose of this study was to determine whether there is a difference in biopsying bone (endpl... more The purpose of this study was to determine whether there is a difference in biopsying bone (endplate), disk, or paravertebral soft tissue to culture the pathogenic organism causing diskitis-osteomyelitis. A retrospective review was conducted of 111 spinal biopsies performed between 2002 and 2011. Pathologic examination was used as the reference standard for detecting diskitis-osteomyelitis. Microbiologic yield, sensitivity, and specificity were calculated. The yields for different groups were compared by use of Fisher exact test. The analysis was repeated with biopsy samples from patients not being treated with antibiotics at the time of biopsy. RESULTS. A total of 122 biopsy specimens were obtained from 111 spinal biopsy procedures on 102 patients. Overall, 27 (22%) biopsies were performed on the endplate-disk, 61 (50%) on the disk only, and 34 (28%) on paravertebral soft tissue only. The microbiologic yield was 36% for all biopsies, 19% for endplate-disk biopsies, 39% for disk-only biopsies, and 44% for soft-tissue biopsies. The sensitivity and specificity of the microbiologic results for all specimens were 57% and 89%; endplate-disk, 38% and 86%; disk only, 57% and 89%; and paravertebral soft tissue, 68% and 92%. There was no statistically significant difference between the yields of the endplate-disk, disk-only, and paravertebral soft-tissue biopsies. CONCLUSION. Paravertebral soft-tissue changes, when present, may be considered a viable target for biopsy in cases of diskitis-osteomyelitis, even in the absence of a paravertebral abscess.

Research paper thumbnail of Foot drop after a suicide attempt

Skeletal Radiology, May 31, 2014

A 33-year-old male had a 2-month history of left foot drop, starting upon waking up 3 days after ... more A 33-year-old male had a 2-month history of left foot drop, starting upon waking up 3 days after a suicide attempt with ingestion of high doses of phenobarbital, clonazepam and alcohol. Painful left drop foot, trophic changes in the lower extremities and bilateral achilles areflexia were noted. Magnetic resonance (MR) imaging of the pelvis (Fig. ) and left thigh (Fig. ) was performed. Fig. 1 Coronal a and axial b SPAIR MR images of the pelvis No related papers from the same study have been published or submitted.

Research paper thumbnail of Acute ankle injuries: association between sprain severity and ancillary findings

einstein (São Paulo)

Miranda et al. reported a correlation between the significance of injuries to osseous, chondral, ... more Miranda et al. reported a correlation between the significance of injuries to osseous, chondral, tendon, and ligamentous tissues in participants with low-grade versus high-grade acute ankle sprains. They demonstrated that participants with high-grade ankle sprains presented with shorter calcaneonavicular distances and increased rates of structural abnormalities compared to those with low-grade sprains. Special attention should be paid to acute ankle sprains in emergency settings to avoid failure in detecting severe injuries that could lead to chronic pain, impairment, or instability.

Research paper thumbnail of Meniscal ramp lesions: an illustrated review

Insights into Imaging, 2021

The purpose of this review is to describe the anatomy and lesions affecting the peripheral portio... more The purpose of this review is to describe the anatomy and lesions affecting the peripheral portion of posterior horn of medial menisci (ramp lesions), along with illustrations and MRI cases. We will correlate imaging features with arthroscopic classification of ramp lesions. Also, postoperative and chronic changes related to meniscocapsular tears will be presented, as well as biomechanical consequences and treatment approach.

Research paper thumbnail of Musculoskeletal "don't touch" lesions: pictorial essay

Radiologia Brasileira, 2019

Focal bone lesions are not uncommon findings in the daily practice of radiology. Therefore, it is... more Focal bone lesions are not uncommon findings in the daily practice of radiology. Therefore, it is essential to differentiate between lesions with aggressive, malignant potential that require action and those that have no clinical significance, many of which are variants or benign lesions, sometimes self-limited and related to reactive processes. In some cases, a diagnostic error can have catastrophic results. For example, a biopsy performed in a patient with myositis ossificans can lead to an incorrect diagnosis of sarcomatous lesions and consequently to mutilating surgical procedures. The present study reviews the main radiological aspects of the lesions that are most commonly seen in daily practice and have the potential to be confused with aggressive, malignant bone processes. We also illustrate these entities by presenting cases seen at our institution.

Research paper thumbnail of Demystifying MR Neurography of the Lumbosacral Plexus: From Protocols to Pathologies

BioMed research international, 2018

Magnetic resonance neurography is a high-resolution imaging technique that allows evaluating diff... more Magnetic resonance neurography is a high-resolution imaging technique that allows evaluating different neurological pathologies in correlation to clinical and the electrophysiological data. The aim of this article is to present a review on the anatomy of the lumbosacral plexus nerves, along with imaging protocols, interpretation pitfalls, and most common pathologies that should be recognized by the radiologist: traumatic, iatrogenic, entrapment, tumoral, infectious, and inflammatory conditions. An extensive series of clinical and imaging cases is presented to illustrate key-points throughout the article.

Research paper thumbnail of Plasmacytoma of head and neck as initial presentation of multiple myeloma

Arquivos de Neuro-Psiquiatria, 2011

Research paper thumbnail of A teenager presenting with pain and popliteal mass

Research paper thumbnail of Is Biopsying the Paravertebral Soft Tissue as Effective as Biopsying the Disk or Vertebral Endplate? 10-Year Retrospective Review of CT-Guided Biopsy of Diskitis-Osteomyelitis

American Journal of Roentgenology, 2015

Research paper thumbnail of Imaging Evaluation of the Pisotriquetral Joint

PURPOSE/AIM Pisotriquetral joint gets few attention from radiologist being forgotten in cases of ... more PURPOSE/AIM Pisotriquetral joint gets few attention from radiologist being forgotten in cases of chronic pain in ulnar aspect of wrist and in acute traumatic context. We illustrate the aspects of the main pathologies affecting this articulation at different methods and how they complement each other. CONTENT ORGANIZATION Anatomic review of the primary stabilizing ligaments of this joint correlated with images of anatomical dissection. In radiographic study the main joint radiographic parameters and normal dynamics of pisiform and joint instability in athlets are discussed, and representative cases of traumatic and degenerative changes and calcific tendinopathy of the flexor carpi ulnaris are discussed. In ultrasound study the aspects of primary stabilizing ligaments and the role of ultrasound in trauma evaluation is described. In magnetic resonance we illustrated early degenerative changes in the radial aspect of the joint and characterize the major ligaments injured in cases of sub...

Research paper thumbnail of Septic arthritis and osteomyelitis of the hip by Candida albicans

The Journal of rheumatology, 2014

Research paper thumbnail of MRI findings of rotator cuff myotendinous junction injury

AJR. American journal of roentgenology, 2014

The purpose of this article is to describe the MRI features of rotator cuff myotendinous junction... more The purpose of this article is to describe the MRI features of rotator cuff myotendinous junction injuries. We retrospectively identified MRI cases with myotendinous junction injury of the rotator cuff muscles and reviewed clinical, imaging, and surgical records. MR images were reviewed independently by two musculoskeletal radiologists to grade myotendinous junction injuries (strain, partial tear, or complete tear) and to assess for concurrent tendon tears (partial or full thickness) and bone changes (fracture or contusion). The final study group comprised 16 subjects. The mean age was 38 years, with a majority of men (56%). The left shoulder was affected in 56% of subjects, with the dominant upper limb affected in 50%. The mean time between symptoms and MRI was 19 days. Subjects reported heavy lifting (19%), landing on the arm after a fall (19%), or prior shoulder therapeutic injection (25%). Myotendinous junction injuries affected the infraspinatus muscle (50%), followed by the su...

Research paper thumbnail of Erratum to: MRI features of the anterolateral ligament of the knee

Skeletal Radiology, 2014

A completely visible ligament had a mean length of 33.2 mm, thickness of 5.6 mm, and width of 1.9... more A completely visible ligament had a mean length of 33.2 mm, thickness of 5.6 mm, and width of 1.9 mm. Where it should have read as: A completely visible ligament had a mean length of 33.2 mm, width of 5.6 mm, and thickness of 1.9 mm. Page 4, First paragraph of Reading parameters and statistical analyses of Results A completely visible ligament had a mean length of 33.2 mm (range, 24.1-39.9 mm), thickness 5.6 mm (range, 4.4-7.1 mm), and width 1.9 mm (range, 1.2-2.5 mm). A completely visible ligament had a mean length of 33.2 mm (range, 24.1-39.9 mm), width 5.6 mm (range, 4.4-7.1 mm), and thickness 1.9 mm (range, 1.2-2.5 mm). Page 6, Table ALL thickness (mm) 5.6 (4.4-7.1) 5.2 (3.5-6.2) ALL width (mm) 1.9 (1.2-2.5) 1.8 (1.0-2.8) Where it should have read as: ALL width (mm) 5.6 (4.4-7.1) 5.2 (3.5-6.2) ALL thickness (mm) 1.9 (1.2-2.5) 1.8 (1.0-2.8) Page 7, First paragraph of last page of Discussion A completely visible ALL on MRI had a mean length of 33.2 mm, thickness of 5.6 mm, and width of 1.9 mm. Where it should have read as: A completely visible ALL on MRI had a mean length of 33.2 mm, width of 5.6 mm, and thickness of 1.9 mm.

Research paper thumbnail of Stress injury of the acromion: case report and literature review

European Journal of Orthopaedic Surgery & Traumatology, 2013

We report a case of stress injury of the acromion related to golf practicing in a 40-year-old mal... more We report a case of stress injury of the acromion related to golf practicing in a 40-year-old male. Fractures of the scapula are unusual, with stress injury of the acromion being even rarer. The probable mechanism would be a strong contraction of posterior fibers of the deltoid during golf swing. There are few published reports of similar injuries, and to our knowledge, this is the first to demonstrate its features by magnetic resonance imaging. A review of the literature is also presented.

Research paper thumbnail of Correction to: Upper extremity infection: imaging features with focus on magnetic resonance imaging

Skeletal Radiology, Jan 3, 2024

Research paper thumbnail of Differential Diagnosis of Facet Joint Disorders

Radiographics, Mar 1, 2021

Spinal pain due to facet joint disease is difficult to diagnose since the clinical history and ph... more Spinal pain due to facet joint disease is difficult to diagnose since the clinical history and physical examination findings are usually nonspecific. Facet joint disorders have a wide range of causes and, because of the potential for chronic back pain and disability, an accurate diagnosis is essential. The most frequent cause of pain in facet joints is osteoarthritis, which can be assessed at radiography, CT, or MRI. Ganglion and synovial cysts of the facet joints can cause compressive symptoms of adjacent structures, especially radiculopathy, lower back pain, and sensory or motor deficits. In ankylosing spondylitis, imaging findings of the facet joints are useful not only for diagnosis but also for monitoring structural changes. In septic arthritis of the facet joints, an early diagnosis at MRI is essential. Gout and metabolic diseases are best evaluated at dual-energy CT, which allows the depiction of crystals. Traumatic dislocations of facet joints are usually unstable injuries that require internal reduction, fixation, and fusion and can be well assessed at CT with three-dimensional reconstructions. Facet joint neoplasms like osteoid osteoma, plasmacytoma, tenosynovial giant cell tumor, and osteochondroma are best evaluated at CT or MRI. The authors provide an overview of key imaging features of the most common facet joint disorders along with anatomic tips and illustrative cases. Acknowledging key imaging findings for the differential diagnosis of facet joint disorders plays a crucial role in the diagnostic accuracy and proper treatment approach for such entities. Online supplemental material is available for this article. ©RSNA, 2021.

Research paper thumbnail of Caudal duplication syndrome

Arquivos De Neuro-psiquiatria, Sep 1, 2009

Research paper thumbnail of Imaging features of the postoperative spine: a guide to basic understanding of spine surgical procedures

Insights Into Imaging, Jun 6, 2023

Spinal surgical procedures are becoming more common over the years, and imaging studies can be re... more Spinal surgical procedures are becoming more common over the years, and imaging studies can be requested in the postoperative setting, such as a baseline study when implants are used, or when there is a new postoperative issue reported by the patient or even as routine surveillance. Therefore, it helps the surgeon in the appropriate management of cases. In this context, there is increasing importance of the radiologist in the adequate interpretation of postoperative images, as well as in the choice of the most appropriate modality for each case, especially among radiographs, computed tomography, magnetic resonance imaging and nuclear medicine. It is essential to be familiar with the main types of surgical techniques and imaging characteristics of each one, including the type and correct positioning of hardware involved, to differentiate normal and abnormal postoperative appearances. The purpose of this pictorial essay is to illustrate and discuss the more frequently used spine surgical interventions and their imaging characteristics, with an emphasis on classical decompression and fusion/stabilization procedures. • Plain radiographs remain the main modality for baseline, dynamic evaluation, and follow-ups. • CT is the method of choice for assessing bone fusion, hardware integrity and loosening. • MRI should be used to evaluate bone marrow and soft tissue complications. • Radiologists should be familiar with most performed spinal procedures in order to differentiate normal and abnormal.

Research paper thumbnail of Comparison of the diagnostic accuracy of 99 m-Tc-MDP bone scintigraphy and 18 F-FDG PET/CT for the detection of skeletal metastases

Acta Radiologica, Dec 22, 2014

Fluorine-18-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT) is c... more Fluorine-18-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT) is commonly performed for cancer staging, as it can detect metastatic disease in multiple organ systems. However, there has been some controversy in the scientific literature when comparing FDG PET/CT and technetium-99 m-bone scintigraphy (bone scan) for the detection of skeletal metastases. To compare the accuracy of FDG PET/CT with bone scan for the detection of skeletal metastases. The study group comprised 202 adult cancer patients who underwent both FDG PET/CT and bone scan within 31 days for staging. Bone scans and FDG PET/CT were evaluated by two musculoskeletal radiologists for the presence and location of skeletal metastatic disease. Confirmation of the final diagnosis was based on the CT or magnetic resonance imaging (MRI) appearance, follow-up imaging, or histology. The sensitivity, specificity, and accuracy for detecting skeletal metastatic disease of FDG PET/CT were 97%, 98%, and 98%, respectively, and of bone scan were 83%, 98%, and 93%, respectively. The lesions that bone scan most commonly missed were located in the pelvis, spine, and sacrum. FDG PET/CT missed mostly lesions that were outside of the field of view, but in all of these cases the patient had additional sites of skeletal metastatic disease. Bone scan falsely identified six metastatic lesions and FDG PET/CT falsely identified three metastatic lesions. FDG PET/CT is an accurate technique for detection of skeletal metastases, and is superior to bone scan, especially in the spine and pelvis.

Research paper thumbnail of Esthesioneuroblastoma

Arquivos De Neuro-psiquiatria, Sep 1, 2009

Esthesioneuroblastoma (ENB) is a rare tumor that usually occurs in young men, with a second peak ... more Esthesioneuroblastoma (ENB) is a rare tumor that usually occurs in young men, with a second peak at the age of 50-60 years 1 . Characteristic imaging features include origin from olfactory epithelium high in the nasal cavity and contrast enhancement either by computed tomography (CT) or magnetic resonance imaging (MRI) 2,3 . We report a patient with persistent nasal obstruction and epistaxis, submitted to biopsy and endoscopic resection of an esthesioneuroblastoma with extension to ethmoidal air cells.

Research paper thumbnail of Is Biopsying the Paravertebral Soft Tissue as Effective as Biopsying the Disk or Vertebral Endplate? 10-Year Retrospective Review of CT-Guided Biopsy of Diskitis-Osteomyelitis

American Journal of Roentgenology, Jul 1, 2015

The purpose of this study was to determine whether there is a difference in biopsying bone (endpl... more The purpose of this study was to determine whether there is a difference in biopsying bone (endplate), disk, or paravertebral soft tissue to culture the pathogenic organism causing diskitis-osteomyelitis. A retrospective review was conducted of 111 spinal biopsies performed between 2002 and 2011. Pathologic examination was used as the reference standard for detecting diskitis-osteomyelitis. Microbiologic yield, sensitivity, and specificity were calculated. The yields for different groups were compared by use of Fisher exact test. The analysis was repeated with biopsy samples from patients not being treated with antibiotics at the time of biopsy. RESULTS. A total of 122 biopsy specimens were obtained from 111 spinal biopsy procedures on 102 patients. Overall, 27 (22%) biopsies were performed on the endplate-disk, 61 (50%) on the disk only, and 34 (28%) on paravertebral soft tissue only. The microbiologic yield was 36% for all biopsies, 19% for endplate-disk biopsies, 39% for disk-only biopsies, and 44% for soft-tissue biopsies. The sensitivity and specificity of the microbiologic results for all specimens were 57% and 89%; endplate-disk, 38% and 86%; disk only, 57% and 89%; and paravertebral soft tissue, 68% and 92%. There was no statistically significant difference between the yields of the endplate-disk, disk-only, and paravertebral soft-tissue biopsies. CONCLUSION. Paravertebral soft-tissue changes, when present, may be considered a viable target for biopsy in cases of diskitis-osteomyelitis, even in the absence of a paravertebral abscess.

Research paper thumbnail of Foot drop after a suicide attempt

Skeletal Radiology, May 31, 2014

A 33-year-old male had a 2-month history of left foot drop, starting upon waking up 3 days after ... more A 33-year-old male had a 2-month history of left foot drop, starting upon waking up 3 days after a suicide attempt with ingestion of high doses of phenobarbital, clonazepam and alcohol. Painful left drop foot, trophic changes in the lower extremities and bilateral achilles areflexia were noted. Magnetic resonance (MR) imaging of the pelvis (Fig. ) and left thigh (Fig. ) was performed. Fig. 1 Coronal a and axial b SPAIR MR images of the pelvis No related papers from the same study have been published or submitted.

Research paper thumbnail of Acute ankle injuries: association between sprain severity and ancillary findings

einstein (São Paulo)

Miranda et al. reported a correlation between the significance of injuries to osseous, chondral, ... more Miranda et al. reported a correlation between the significance of injuries to osseous, chondral, tendon, and ligamentous tissues in participants with low-grade versus high-grade acute ankle sprains. They demonstrated that participants with high-grade ankle sprains presented with shorter calcaneonavicular distances and increased rates of structural abnormalities compared to those with low-grade sprains. Special attention should be paid to acute ankle sprains in emergency settings to avoid failure in detecting severe injuries that could lead to chronic pain, impairment, or instability.

Research paper thumbnail of Meniscal ramp lesions: an illustrated review

Insights into Imaging, 2021

The purpose of this review is to describe the anatomy and lesions affecting the peripheral portio... more The purpose of this review is to describe the anatomy and lesions affecting the peripheral portion of posterior horn of medial menisci (ramp lesions), along with illustrations and MRI cases. We will correlate imaging features with arthroscopic classification of ramp lesions. Also, postoperative and chronic changes related to meniscocapsular tears will be presented, as well as biomechanical consequences and treatment approach.

Research paper thumbnail of Musculoskeletal "don't touch" lesions: pictorial essay

Radiologia Brasileira, 2019

Focal bone lesions are not uncommon findings in the daily practice of radiology. Therefore, it is... more Focal bone lesions are not uncommon findings in the daily practice of radiology. Therefore, it is essential to differentiate between lesions with aggressive, malignant potential that require action and those that have no clinical significance, many of which are variants or benign lesions, sometimes self-limited and related to reactive processes. In some cases, a diagnostic error can have catastrophic results. For example, a biopsy performed in a patient with myositis ossificans can lead to an incorrect diagnosis of sarcomatous lesions and consequently to mutilating surgical procedures. The present study reviews the main radiological aspects of the lesions that are most commonly seen in daily practice and have the potential to be confused with aggressive, malignant bone processes. We also illustrate these entities by presenting cases seen at our institution.

Research paper thumbnail of Demystifying MR Neurography of the Lumbosacral Plexus: From Protocols to Pathologies

BioMed research international, 2018

Magnetic resonance neurography is a high-resolution imaging technique that allows evaluating diff... more Magnetic resonance neurography is a high-resolution imaging technique that allows evaluating different neurological pathologies in correlation to clinical and the electrophysiological data. The aim of this article is to present a review on the anatomy of the lumbosacral plexus nerves, along with imaging protocols, interpretation pitfalls, and most common pathologies that should be recognized by the radiologist: traumatic, iatrogenic, entrapment, tumoral, infectious, and inflammatory conditions. An extensive series of clinical and imaging cases is presented to illustrate key-points throughout the article.

Research paper thumbnail of Plasmacytoma of head and neck as initial presentation of multiple myeloma

Arquivos de Neuro-Psiquiatria, 2011

Research paper thumbnail of A teenager presenting with pain and popliteal mass

Research paper thumbnail of Is Biopsying the Paravertebral Soft Tissue as Effective as Biopsying the Disk or Vertebral Endplate? 10-Year Retrospective Review of CT-Guided Biopsy of Diskitis-Osteomyelitis

American Journal of Roentgenology, 2015

Research paper thumbnail of Imaging Evaluation of the Pisotriquetral Joint

PURPOSE/AIM Pisotriquetral joint gets few attention from radiologist being forgotten in cases of ... more PURPOSE/AIM Pisotriquetral joint gets few attention from radiologist being forgotten in cases of chronic pain in ulnar aspect of wrist and in acute traumatic context. We illustrate the aspects of the main pathologies affecting this articulation at different methods and how they complement each other. CONTENT ORGANIZATION Anatomic review of the primary stabilizing ligaments of this joint correlated with images of anatomical dissection. In radiographic study the main joint radiographic parameters and normal dynamics of pisiform and joint instability in athlets are discussed, and representative cases of traumatic and degenerative changes and calcific tendinopathy of the flexor carpi ulnaris are discussed. In ultrasound study the aspects of primary stabilizing ligaments and the role of ultrasound in trauma evaluation is described. In magnetic resonance we illustrated early degenerative changes in the radial aspect of the joint and characterize the major ligaments injured in cases of sub...

Research paper thumbnail of Septic arthritis and osteomyelitis of the hip by Candida albicans

The Journal of rheumatology, 2014

Research paper thumbnail of MRI findings of rotator cuff myotendinous junction injury

AJR. American journal of roentgenology, 2014

The purpose of this article is to describe the MRI features of rotator cuff myotendinous junction... more The purpose of this article is to describe the MRI features of rotator cuff myotendinous junction injuries. We retrospectively identified MRI cases with myotendinous junction injury of the rotator cuff muscles and reviewed clinical, imaging, and surgical records. MR images were reviewed independently by two musculoskeletal radiologists to grade myotendinous junction injuries (strain, partial tear, or complete tear) and to assess for concurrent tendon tears (partial or full thickness) and bone changes (fracture or contusion). The final study group comprised 16 subjects. The mean age was 38 years, with a majority of men (56%). The left shoulder was affected in 56% of subjects, with the dominant upper limb affected in 50%. The mean time between symptoms and MRI was 19 days. Subjects reported heavy lifting (19%), landing on the arm after a fall (19%), or prior shoulder therapeutic injection (25%). Myotendinous junction injuries affected the infraspinatus muscle (50%), followed by the su...

Research paper thumbnail of Erratum to: MRI features of the anterolateral ligament of the knee

Skeletal Radiology, 2014

A completely visible ligament had a mean length of 33.2 mm, thickness of 5.6 mm, and width of 1.9... more A completely visible ligament had a mean length of 33.2 mm, thickness of 5.6 mm, and width of 1.9 mm. Where it should have read as: A completely visible ligament had a mean length of 33.2 mm, width of 5.6 mm, and thickness of 1.9 mm. Page 4, First paragraph of Reading parameters and statistical analyses of Results A completely visible ligament had a mean length of 33.2 mm (range, 24.1-39.9 mm), thickness 5.6 mm (range, 4.4-7.1 mm), and width 1.9 mm (range, 1.2-2.5 mm). A completely visible ligament had a mean length of 33.2 mm (range, 24.1-39.9 mm), width 5.6 mm (range, 4.4-7.1 mm), and thickness 1.9 mm (range, 1.2-2.5 mm). Page 6, Table ALL thickness (mm) 5.6 (4.4-7.1) 5.2 (3.5-6.2) ALL width (mm) 1.9 (1.2-2.5) 1.8 (1.0-2.8) Where it should have read as: ALL width (mm) 5.6 (4.4-7.1) 5.2 (3.5-6.2) ALL thickness (mm) 1.9 (1.2-2.5) 1.8 (1.0-2.8) Page 7, First paragraph of last page of Discussion A completely visible ALL on MRI had a mean length of 33.2 mm, thickness of 5.6 mm, and width of 1.9 mm. Where it should have read as: A completely visible ALL on MRI had a mean length of 33.2 mm, width of 5.6 mm, and thickness of 1.9 mm.

Research paper thumbnail of Stress injury of the acromion: case report and literature review

European Journal of Orthopaedic Surgery & Traumatology, 2013

We report a case of stress injury of the acromion related to golf practicing in a 40-year-old mal... more We report a case of stress injury of the acromion related to golf practicing in a 40-year-old male. Fractures of the scapula are unusual, with stress injury of the acromion being even rarer. The probable mechanism would be a strong contraction of posterior fibers of the deltoid during golf swing. There are few published reports of similar injuries, and to our knowledge, this is the first to demonstrate its features by magnetic resonance imaging. A review of the literature is also presented.