The main causes of dystocia of vertex presentation were occiput malpresentation, macrosomic infant, uterine atony, abnormal pelvic and genital tract.

导致头位难产的主要因素依次为胎头位置异常、巨大儿、宫缩乏力、软产道及骨产道异常。

Method Seven cases of MPMT of the female genital tract were studied by clinicopathology in combination with the review of the literature.

方法回顾分析7例女性生殖系统MPMT的临床病理资料并复习文献。