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uterine septum
A uterine septum is a form of a congenital malformation where the uterine cavity is partitioned by a longitudinal septum; the outside of the uterus has a normal typical shape. The wedge-like partition may involve only the superior part of the cavity resulting in an ''incomplete septum'' or a ''subseptate uterus'', or less frequently the total length of the cavity (''complete septum'') and the cervix resulting in a double cervix. The septation may also continue caudally into the vagina resulting in a "double vagina".
==Etiology==
The uterus is formed during embryogenesis by the fusion of the two Müllerian ducts. During this fusion a resorption process eliminates the partition between the two ducts to create a single cavity. This process begins caudally and advances cranially, thus a complete septum formation represents an earlier disturbance of this absorption than the incomplete form. Causes for incomplete absorption are not known.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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