Malignant sertoli cell tumor in the retained abdominal testis of a unilaterally cryptorchid horse

Suzanne M. Pratt, Brian A. Stacy, Mary B Whitcomb, Justin D. Vidal, Hilde E V De Cock, William D Wilson

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

A 13-year-old Morgan gelding was evaluated because of a mass in the caudal region of the abdomen. The horse had been presumed to be a gelding, but necropsy findings revealed a retained testis in the right retroperitoneal space. Histologically, the retained testis contained neoplastic cells; metastases were identified in the liver, spleen, lungs, and sublumbar lymph nodes. Immunohistochemical examination of the testis and metastatic tissues confirmed the diagnosis of malignant Sertoli cell tumor. Testicular neoplasms are infrequently reported in stallions. Seminomas are most commonly reported, whereas Sertoli cell tumors are considered to be rare. Typical biological behavior of Sertoli cell tumors in horses is unknown. To the authors' knowledge, there have been 2 reports of Sertoli cell tumors in horses; the tumors developed in descended testes, and 1 tumor was malignant.

Original languageEnglish (US)
Pages (from-to)486-490+450
JournalJournal of the American Veterinary Medical Association
Volume222
Issue number4
DOIs
StatePublished - Feb 15 2003

ASJC Scopus subject areas

  • veterinary(all)

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