Colon volvulus in rhesus macaques (Macaca mulatta) at the Oregon National Primate Research Center-Retrospective analysis.

Colonic volvulus is an uncommon, often life-threatening condition, in non-human primates. Twenty-six cases of colonic volvulus in rhesus macaques (Macaca mulatta) were identified in necropsy records spanning 38 years at the Oregon National Primate Research Center (ONPRC). This report represents the largest collection of colonic volvuli in rhesus macaques.