Perianal neuroendocrine tumor with suspected lymph node metastasis causing colonic compression and subsequent megacolon.
An 8-year-old spayed female domestic shorthair cat was presented with a 4- to 5-month history of a progressively growing mass above her anus and an inability to defecate for 3 to 4 wk. External perianal and internal regional masses were subsequently identified and diagnosed as tumors of neuroendocrine origin through surgical excision and histopathologic evaluation. The cat was treated with 2 courses of chemotherapy and radiation therapy.
Department of Veterinary Clinical Sciences (Joudrey, Robinson, Gaschen) and Department of Pathobiological Sciences (Blair, McLaughlin), School of Veterinary Medicine, Louisiana State University, Baton Rouge, Louisiana 70803, USA.
Scott D
SD
Joudrey
Department of Veterinary Clinical Sciences (Joudrey, Robinson, Gaschen) and Department of Pathobiological Sciences (Blair, McLaughlin), School of Veterinary Medicine, Louisiana State University, Baton Rouge, Louisiana 70803, USA.
Duane A
DA
Robinson
Department of Veterinary Clinical Sciences (Joudrey, Robinson, Gaschen) and Department of Pathobiological Sciences (Blair, McLaughlin), School of Veterinary Medicine, Louisiana State University, Baton Rouge, Louisiana 70803, USA.
Robert
R
Blair
Department of Veterinary Clinical Sciences (Joudrey, Robinson, Gaschen) and Department of Pathobiological Sciences (Blair, McLaughlin), School of Veterinary Medicine, Louisiana State University, Baton Rouge, Louisiana 70803, USA.
Leslie D
LD
McLaughlin
Department of Veterinary Clinical Sciences (Joudrey, Robinson, Gaschen) and Department of Pathobiological Sciences (Blair, McLaughlin), School of Veterinary Medicine, Louisiana State University, Baton Rouge, Louisiana 70803, USA.
Lorrie
L
Gaschen
D000694:Anal Gland Neoplasms / Q000150:complications / Q000473:pathology* / Q000628:therapy; D000818:Animals; D000970:Antineoplastic Agents / Q000627:therapeutic use; D018278:Carcinoma, Neuroendocrine / Q000150:complications / Q000473:pathology / Q000628:therapy / Q000662:veterinary*; D002371:Cat Diseases / Q000209:etiology / Q000473:pathology* / Q000628:therapy; D002415:Cats; D003108:Colonic Diseases / Q000150:complications / Q000473:pathology / Q000662:veterinary*; D005260:Female; D008531:Megacolon / Q000209:etiology / Q000473:pathology / Q000662:veterinary*; D011878:Radiotherapy / Q000662:veterinary
D000970:Antineoplastic Agents