A case of acardiac anomaly in the cynomolgus monkey (Macaca fascicularis): a complication of monozygotic monochorial twinning.
A case of acardius acephalus in a Macaca fascicularis is reported. This congenital anomaly occurs only in multiple-birth gestations (most commonly monozygotic twins). Artery-to-artery and vein-to-vein anastomoses appear to be a constant feature. This condition is very rare in man and probably even more so in monkeys. Classification and theories on etiology are discussed.
D000015:Abnormalities, Multiple / Q000000981:diagnostic imaging / Q000473:pathology; D000818:Animals; D001464:Barium; D001921:Brain / Q000002:abnormalities / Q000000981:diagnostic imaging; D005260:Female; D006330:Heart Defects, Congenital / Q000000981:diagnostic imaging / Q000473:pathology*; D006801:Humans; D008251:Macaca / Q000033:anatomy & histology*; D008252:Macaca fascicularis / Q000033:anatomy & histology*; D010920:Placenta / Q000098:blood supply / Q000473:pathology; D011247:Pregnancy; D011859:Radiography; D014427:Twins; D014430:Twins, Monozygotic
D001464:Barium