Retrospective study of canine cutaneous tumors submitted to a diagnostic pathology laboratory in Northern Portugal (2014–2020) (original) (raw)
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Cutaneous Tumors in Dogs: A Retrospective Epidemiological and Histological Study of 112 Cases
Advances in Animal and Veterinary Sciences, 2021
C utaneous tumors commonly affect dogs (Graf et al., 2018) as the skin is significantly damaged by physical and chemical factors contributing to the development of canine cutaneous tumors (Pakhrin et al., 2007). Moreover, the skin has a large number of cells that are continuously renewed, rendering the skin more vulnerable to gene disorders with subsequent mutations (Tostes et al., 2017). Approximately 30% of all canine neoplasms arise in the skin (Kaldrymidou et al., 2002; Strafuss, 1985a). The incidence of canine cutaneous tumors is estimated to be 728 cases per 100,000 dogs per year (Kaldrymidou et al., 2002). Similar histological features of some cutaneous tumors result in research Article Abstract | Background: In the present study, a total of 112 dogs with cutaneous tumors were examined between November 2018 and November 2020. Out of 112 dogs, 118 skin tumor samples were obtained, of which 68 (57.63%) cases were malignant, and 50 (42.37%) cases were benign. Objectives: The objectives were to identify the most common histologic types of canine cutaneous tumors in Egypt, report the relative frequency of each tumor type, and elucidate the association of risk factors (age, sex, breed, and tumor anatomical site) with the development of common cutaneous tumor types. Methods: The samples were collected from different private veterinary practices. All samples were processed and diagnosed histopathologically in the Department of Pathology, Faculty of Veterinary Medicine, Cairo University, Egypt. Immunohistochemistry was used to confirm the diagnosed tumor types. Multinomial logistic regression models were used to study associations of the development of benign or malignant cutaneous tumors with risk factors. Results: Thirty different canine cutaneous tumors were diagnosed. Basal cell carcinoma (8.47%), papilloma (7.63%), infundibular keratinizing acanthoma (6.78%), liposarcoma (6.78%), and fibrosarcoma (5.93%) were the most common tumors. Tumors were commonly found on the trunk (25.42%), head (17.79%), and extremities (17.79%). The most affected breed was Golden Retriever (11.61%). The occurrence was predominant in males (53.57%) as compared to females (33.03%). Conclusion: The findings from this study are important for small animal clinical practices as they will serve as a useful reference to establish a preliminary diagnosis of cutaneous tumors in dogs as rapidly and precisely as possible.
Acta Veterinaria
Cutaneous lesions, especially skin tumors in dogs, are among the most common lesions in this animal species. The aim of this study was to identify the most common types of canine cutaneous lesions, to determine the absolute and relative frequency of each type of cutaneous lesion, anatomical locations, mean age, as well as gender and breed distribution. The examination included all samples of cutaneous lesions in dogs obtained by surgical biopsy in veterinary clinics and examined at the Laboratory of the Department of Pathology at the Faculty of Veterinary Medicine, University of Belgrade from the 1st January 2011 to the 1st July 2021. In this period (126 months), a total of 2432 samples of cutaneous lesions were examined, of which 1984 (81.58%) were tumors (1037/1984, 52.27% benign and 947/1984, 47.73% malignant) and 448 (18.42%) non-neoplastic cutaneous lesions. The most commonly found cutaneous tumors were: mast cell tumor (17.34% of all tumors), histiocytoma (9.78%), papilloma (7...
Cutaneous Tumors in Dogs - A Retrospective Study of Ten Years
However, in Brazil, studies on the occurrence of these types of tumor are rare, particularly in relation to sex, breed and age (SOUZA et al., 2006). This article had the aims of providing data relating the occurrence of various types of skin tumor and investigating the relationships between such occurrences and sex, breed and age, among a set of 662 skin tumor samples examined over a ten-year period, coming from a defined population of dogs in the northern and northeastern regions of the State of São Paulo, Brazil. MATERIAL AND METHODS The case population included 662 samples of skin tumors originating from various cities in the northern and northeastern regions of the State of São Paulo, Brazil. Medical records of dogs evaluated at the Department of Veterinary Pathology at the School of Agrarian and Veterinary Sciences of Jaboticabal, State of São Paulo, Brazil from January 1998 though January 2008 were retrospectively reviewed for epidemiology and histologic diagnosis of tumors lo...
Journal of Veterinary Medicine Series A, 2002
One hundred and seventy-four dogs diagnosed with cutaneous neoplasms in the Animal Medical and Surgical Clinic, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, were studied. Thirty-one types of neoplasm were diagnosed, among which mast cell tumours (13.8%), hepatoid gland adenomas (9.8%), lipomas (5.7%) and histiocytomas (5.7%) were the most common. The prevalence of epithelial, mesenchymal, lymphohistiocytic and melanocytic tumours was 47.7, 40.8, 8.6 and 2.9%, respectively. Potentially malignant neoplasms were less frequently recorded than benign neoplasms. The tumours were single (80.5%) or multiple (19.5%) and located on the head and neck (18.4%), the body trunk (49.4%), the limbs (25.9%) or at multiple sites (6.3%). The factors evaluated in multivariable logistic regression models for possible association with the odds of a tumour's potential for malignancy included the age, the sex and the breed of the dog, as well as the histological type of the neoplasm. Dogs with mesenchymal tumours had two times higher odds of potential for malignancy than those with epithelial tumours. In contrast, dogs with either lymphohistiocytic or melanocytic tumours did not have increased risk of malignancy compared with dogs with epithelial tumours. The odds of tumour malignancy linearly increased with increasing age of the dog by a factor of 1.1 per year. Finally, the eect of the sex and the breed of the dog on the risk of developing cutaneous neoplasms was investigated in an age-matched case±control sample of 348 dogs by conditional logistic regression analysis. The odds of neoplasm presence were two times higher in pure bred dogs than in mongrels but did not dier between cross-breeds and mongrels.
Retrospective Study of Canine Cutaneous Neoplasia
Archives of Veterinary Science, 2017
O estudo teve por objetivo estabelecer a prevalencia de câncer de pele em caes em casos analisados no Laboratorio de Patologia Animal da Universidade Federal do Parana, Setor Palotina, entre 2010 a 2013. De 1.395 arquivos de biopsia do laboratorio, 347 (24,87%) foram categorizadas como neoplasias. As racas mais afetadas foram: poodle (46/13,26%), boxer (27/7,78%), pitbull (19/5,48%), rottweiller (18/5,19%) e cocker spaniel (17/4,9%). A media de idade foi de 7,5 anos. Houve um predominio de machos (197/ 56.77%) comparado ao de femeas (150/43,23%). As neoplasias mais prevalentes foram: Mastocitoma (62/17,87%), Carcinoma de Celulas Escamosas (35/10,09%), Melanoma (29/8,36%), Adenoma de Glândula Adanal (25/7,20%), Tumor Venereo Transmissivel Cutâneo (24/6,92%), Lipoma (22/6,34%), Histiocitoma (22/6,34%), Hemangioma (18/5,19%), Carcinoma Basocelular (17/4,90%) e Hemagiossarcoma (16/4,61). Outras neoplasias somaram 77 casos (22,19%). Apesar de ser concordante com os resultados de estudos ...
A Study of Occurrence, Gross and Histopathological Characteristics of Canine Cutaneous Neoplasms
The present work was undertaken to study the occurrence along with the gross and histopathological features of canine cutaneous neoplasms in and around Thrissur. A total of 17 tumour samples were examined during the study. The mean age of the dogs affected with tumours was 6.55±0.59 years. The occurrence was slightly higher in males, but there was no association (p>0.05) between the sex and occurrence of skin tumours. Among the various breeds, Labradors were more affected with these tumours. Grossly, most of the tumours were round to oval in shape with soft to firm consistency and greyish white colour. Histopathological examination confirmed majority of the tumours as benign with more number of epithelial/melanocytic tumours.
Prevalence of canine cutaneous neoplasms from Shiraz, Iran
IJVST-2019; Vol.11, No.1, 2019
Th e present study was conducted on 42 dogs with a histopathological diagnosis of skin neoplasia presented in the Shiraz University Veterinary Clinic from April 2012 to December 2017. All cases were reviewed, excluding the mammary gland neo-plasms. Th e histopathological type, prevalence, sex, age, breed and site distribution of the neoplasms were described. In addition, previous studies on canine skin tumors from other geographic regions were evaluated and compared with the results of the present study. Fift een diff erent histopathological types of tumor were diagnosed. Th e prevalence of epithelial, mesenchymal, melanocytic and lymphohistiocytic tumors was 61.9%, 35.7%, 2.4% and 0 %, respectively. Th e three most common tumors were sebaceous gland adenoma (21.42%), squamous cell carcinoma (11.9%), and lipoma (11.9%). Th e incidences of these tumors were more than other researches. Although there is no obvious explanation for these geographical diff erences, the possible reasons may be the geographical locations, environmental infl uences, and the study population and breed. Terriers were the most common type of the dogs in this study (34.4%). Th e present fi ndings about the dogs age and various skin tumors and the anatomical locations indicates that there is no signifi cant variation in these important parameters among the Iranian dogs and dogs from other parts of the world.
Brazilian Consensus for the Diagnosis, Treatment and Prognosis of Cutaneous Mast Cell Tumors in Dogs
2018
Mast cell tumors represent the most common malignant skin tumor in the dog. This review outlines the incidence, etiology and clinical signs of mast cell tumors. Diagnostic tests, staging and treatments are also discussed. This study was performed by the Veterinary Oncology and Pathology of UNESP, Jaboticabal and the Service of Pathology Veterinary, of UNESP-Botucatu with the support of the Brazilian Association of Veterinary Oncology and the Brazilian Association of Veterinary Pathology.
A review of neoplastic and non-neoplastic canine skin tumours in Trinidad from 2010-2015
Brazilian Journal of Veterinary Pathology
This retrospective study was performed on samples submitted to the Pathology Unit of the School of Veterinary Medicine, Faculty of Medical Sciences, St. Augustine, Trinidad, during the period 2010 to 2015. A total of 471 noninflammatory cutaneous masses were analyzed, of which 225 (47.8%) were malignant, 202 (42.9%) were benign and 44 (9.3%) were non-neoplastic. The most common malignant tumors were haemangiosarcoma, 50 (22.2%); mast cell tumour, 49 (21.8%); soft tissue sarcoma 35 (15.6%), lymphoma, 20 (8.9%) and melanoma 20 (8.9%). The most common benign tumors were haemangioma, 39 (19.3%); lipoma, 27 (13.4%), trichoblastoma, 26 (12.9%), histiocytoma 25 (12.4%), plasma cell tumor, 23 (11.4%) and papilloma 9 (4.5%). Common non-neoplastic skin lesions included collagen naevi, 26 (59.1%) and follicular cysts, 11 (25.0%). Mixed breed dogs 241 (51.2%), was most frequently represented with neoplasms followed by Rottweilers 50 (10.6%) and Pit bulls 48 (10.1%).
Research Article Neoplastic and Nonneoplastic Cutaneous Tumors of Dogs in Grenada, West Indies
This retrospective survey was undertaken between 2002 and 2007 on samples from dogs residing in Grenada. The objectives of the study were to identify the most common histologic types of canine cutaneous tumors, determine the relative frequency of each tumor type, and compare results to reports from other regions. In a series of 225 skin masses examined, the proportion of neoplasms was 72% whereas nonneoplastic tumors accounted for 15.6%, and inflammatory conditions constituted 12.4%. There were 10 types of nonneoplastic tumors with hamartomas being the most common (28.5%), followed by sebaceous hyperplasia (25.7%) and fibroepithelial polyps (22.8%). The 10 most common cutaneous neoplasms were hemangiosarcomas (19.1%), histiocytomas (8.6%), melanocytomas (8%), mast cell tumors (6.8%), lipomas (6.8%), hemangiopericytomas (6.2%), papillomas (5.6%), fibrosarcomas (5.6%), hemangiomas (4.9%), and squamous cell carcinomas (4.3%). Tumors of vascular origin and transmissible venereal tumors ...