“…3 Lymphoma is the most common hematopoietic malignancy in animals, and has been reported in all domestic and many nondomestic species. 1,3,5,6,9,10,13,15 Lymphomas are classified depending on anatomic location (multicentric, alimentary, mediastinal, other), immunophenotype (B lymphocyte vs. T lymphocyte vs. non-B/non-T), cellular morphology (size, nuclear features, mitotic rate), histologic pattern (diffuse or follicular), and biologic behavior (indolent or aggressive). 3 In the case of the raccoon dog presented herein, the neoplasm was classified as T-cell multicentric lymphoma with a leukemic phase; this neoplasm was well differentiated and aggressive.…”