两名兄弟姐妹均有15节胸椎及肋骨对。

Pediatr Radiol. 1985;15(1):61-2. doi: 10.1007/BF02387857.

Born to consanguionous parents, two siblings were each found to have fifteen dorsal vertebrae and rib pairs: one had Hirschsprung's disease, the other had a low type of anal atresia.

这对兄弟姐妹的父母是近亲结婚，他们每人都有15节胸椎和15对肋骨：其中一人患有先天性巨结肠症，另一人患有低位肛门闭锁。