Maxillary Lymphosarcoma in a White-tailed Deer (Odocoileus virginianus)

Abstract

In 1996, lymphosarcoma was observed in a captive adult female white-tailed deer (Odocoileus virginianus) from northeastern Kansas (USA). A subcutaneous mass on the deer's left cheek was surgically removed and lymphosarcoma was diagnosed. The mass recurred within 3 wk. A second surgical removal was attempted but the tumor had grown much larger, had become intimately involved with the buccal mucosa, and was beginning to interfere with mastication. For these reasons, the deer was euthanized. At postmortem examination the only abnormal findings were the primary tumor and enlarged ipsilateral parotid and mandibular lymph nodes. Histologically these tissues demonstrated changes characteristic of lymphosarcoma but no other organs had evidence of neoplastic disease. A diagnosis of focal lymphosarcoma with local metastasis was made. The organ distribution of lymphosarcoma in this deer differs from previously described cases of lymphosarcoma in cervids.

Multicentric T-cell Lymphosarcoma in a White-tailed Deer (Odocoileus virginianus)

“…Of the cases of lymphosarcoma in whitetailed deer reported to date, most were multicentric and often involved thoracic and abdominal viscera (Debbie and Friend, 1967;Cosgrove et al, 1981). Only one solitary lymphosarcoma in the maxilla of a white-tailed deer was further immunophenotyped and determined to be of Tcell origin (Larsen et al, 2002). A unique finding in the present case was the involvement of the leptomeninges and choroid plexus.…”

Pigmented tumors in fallow deer (Dama dama): 11 cases

“…2 Literature citations of other types of neoplasia in cervids are sporadic, and include lymphosarcoma, melanoma, schwannoma, and oligodendroglioma. 4,9,10,15,16 We describe the histopathologic characteristics and clinical history of an unusual series of 11 fallow deer with pigmented tumors.…”