Retrospective Analysis of 101 Canine Lymphoma Cases Diagnosed in Surgical biopsies in Latvia (2011–2020)

Abstract Lymphoma is a malignant tumor commonly diagnosed in dogs representing 7–24% of all canine tumors. There has been no previous studies focused on characterization lymphoma cases Latvia. The goals this retrospective study were to determine prevalence and characteristics among biopsy submissions private veterinary pathology service that receives approximately 80% submission Latvia compare data with published reviews. Data retrieved select records from Latvian between 2011 2020, determining types based anatomic distribution cellular morphology. In ten-year period, diagnosis constituted 1–4% surgical each year without upwards trend. Affected middle age (median 8 years; range 2–13), slight male predominance (58%). majority (19%) mixed breed. Top 3 affected dog breeds Rottweiler, American Staffordshire terrier French bulldog 6–7 Multicentric form predominated (55%) followed by alimentary mucocutaneous (21% 14%, respectively). Within multicentric two thirds intermediate large cell lymphomas. Included group would be diffuse B lymphomas, the most common subtype lymphomas; however, lack immunohistochemical testing precluded complete classification according WHO guidelines. Results correlate well previously results provide important information small animal veterinarians pathologists.