二腕二頭体の一剖検例

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  • An autopsy case of dicephalic monster

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A case has been described of dicephalus dibrachius dipus delivered by a 25-years-old Japanese, para 7-2. Past history of the mother was essentially negative except for 3 early artificial mischarges. The last baby died of unknown course 2 hours after the delivery. There was no history of congenital malformation in her immediate family. The present case was stillborn at term. There was one placenta weighing 1,000g and one cord.<BR>General feature of the body is that of undernourished male infant, measurin g 44cm in length and weighing 3,780g. The monster has two heads, one pair of upper- and lowerextremites. Both heads are normal in size and shape. The skull bones, all organs of central nervous system, the necks and mediastinums are equally duplicated on each side. There is no bony connection between the two necks or the two vertebretes, but one fused sternum palpable in the anterior wall of the rather wide thorax. In the thoracic cage there are one pair of intrathoracic organs, but two sets of the auriculum are fused in One, which has two pair of vessels. Each heart is uniauricular, biventricular heart with high interventricular septal defect. Both left ventriculi are hypoplastic. Fusion of the aortic trunks is found at the level of the diaphragma. The fetus has a single abdominal cavity. Two parallel descending esophagi enter the two stomachs. Fusion of the two digestive systems occurs at the level of the anal end of the duodenum. The livers and the pancreases are fused at the median line. The spleen, the gall bladder, the choledochial duct and the pancreatic duct are also duplicated, and the ducts open at each Vater's papilla. No gross anomaly is found in the other abdominal organs, including the urogenital system.

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