Bale P M
Pathology. 1980 Apr;12(2):237-43. doi: 10.3109/00313028009060078.
A 2 cm subcutaneous ependymoma was resected from the natal cleft of a 4-yr-old girl. The coccyx was not removed and there has been no recurrence in 14 years. A study of the post-coccygeal region in 15 control infants revealed subcutaneous islands of ependyma, unconnected with the cauda equina, in 4/4 infants with post-anal dimples and in 6/11 infants with no external post-coccygeal anomaly.
从一名4岁女孩的骶尾部切除了一个2厘米的皮下室管膜瘤。未切除尾骨，14年来未出现复发。对15名对照婴儿的尾骨后区域进行研究发现，在4名有肛门后凹痕的婴儿以及6名无尾骨后外部异常的婴儿中，有4名婴儿和6名婴儿存在与马尾不相连的皮下室管膜岛。
