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Cutaneous Round Cell Tumours in Dogs: Differentials and Diagnostic Dilemmas

Presented by Alison Lee BSc MVB MRCVS DipACVP

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About the webinar

Dogs frequently present to first-opinion practice with skin masses, which may require diagnostic work-up including fine needle aspirate and/or biopsy. Cutaneous round cell tumours (CRCTs) (including mast cell tumours, histiocytic neoplasms, plasmacytomas, lymphomas and melanomas) comprise a significant proportion of these masses. Transmissible venereal tumour (TVT) is another CRCT, albeit one less frequently encountered in the UK. Diagnosis of these neoplasms is usually straightforward, but in some cases, these neoplasms can mimic each other (or other tumour types) requiring the pathologist to recommend further tests including immunohistochemistry. Frustratingly, in rare cases, immunohistochemistry results may be equivocal. This presentation provides a brief overview of round cell tumours in dogs as well a review of several case examples.

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About the speaker


Alison studied veterinary medicine in University College Dublin (UCD) and graduated in 2013. She also completed an intercalated degree in Veterinary Pathology at the Royal Veterinary College from 2010 to 2011. After a year in small animal practice in the UK, she completed her anatomic pathology residency in UCD and became a diplomate of the American College of Veterinary Pathology in 2019. During her residency, she conducted research on Ovine Pulmonary Adenocarcinoma (OPA) in sheep, as well as partaking in research into bovine respiratory disease. She now works as part of the anatomic pathology team at NationWide Laboratories. Her current interests include companion animal dermatopathology and oncology, exotic animals and digital pathology. Alison lives in Devon (with an 18-year-old, hyperthyroid cat) and when she’s not at the microscope, she enjoys hiking on Dartmoor or along the coast, running and playing violin.