title: Persistent cloaca in a cynomolgus monkey (Macaca fascicularis).
abstract: A persistent cloaca was found to occur in a 15-year-old female cynomolgus monkey. This is the first case reported in a nonhuman primate. The embryological basis of this anomaly is discussed, and pertinent anatomical findings in this animal are reported which demonstrate the embryologic defect.
mesh_terms: D000818:Animals; D002988:Cloaca; D005260:Female; D000882:Haplorhini; D008251:Macaca; D008252:Macaca fascicularis; D008992:Monkey Diseases / Q000151:congenital*; D014564:Urogenital Abnormalities