Gugliantini P, Caione P, Rivosecchi M, Fariello G
Pediatr Radiol. 1979 Apr 19;8(2):113-5. doi: 10.1007/BF00974003.
A newborn infant, who had suffered intrauterine perforation and had developed peritoneal calcification, showed no sign of pneumoperitoneum on the first radiograph taken 3 hours after delivery. At that time air was present in the stomach only. Subsequently pneumoperitoneum developed as air passed down the gut to the point of perforation. Thus, the absence of pneumoperitoneum on a radiograph taken very early in life does not exclude an intestinal perforation.
一名曾发生宫内穿孔并已出现腹膜钙化的新生儿，在出生后3小时拍摄的第一张X光片上未显示气腹迹象。当时仅胃内有气体。随后，随着气体沿肠道下行至穿孔部位，气腹形成。因此，在生命早期拍摄的X光片上没有气腹并不排除肠道穿孔。
