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Small intestine adenocarcinoma in conjunction with multiple adenomas causing acute colic in a horse

Correspondence: ¹Corresponding Author: Juan A. Muñoz Moran, Equine Department, Ecole Nationale Vétérinaire de Lyon, 1, Avenue Bourgelat, 69280 Marcy L'Etoile, France, e-mail: jamunozmoran{at}yahoo.es

An 11-year-old Andalusian stallion developed marked signs of colic associated with an acute small intestine obstruction. Exploratory laparotomy revealed a distal jejunum full-thickness wall induration and multiple small adherent intraluminal masses. Fifteen centimeters of jejunum, including the induration, and several intraluminal masses were resected. Histologic examination revealed an adenocarcinoma and multiple polypoid adenomas. The horse was discharged, and no complications were reported 12 months postoperatively. Colic was considered secondary to partial jejunal lumen obstruction by the adenocarcinoma. Adenocarcinoma recurrence or transformation from remaining adenomas into an adenocarcinoma is still a major risk.

Key Words: Adenocarcinoma • adenoma • colic • equines • small intestine