Hemorrhoids consist of dilated submucosal veins which may thrombose and rupture with hematoma formation.
Hemorrhoids consist of dilated submucosal veins which may thrombose and rupture with hematoma formation.
痔疮由扩张的黏膜下血管形成，此黏膜下血管可形成血栓和破损伴有血肿的形成。
Hemorrhoids consist of dilated submucosal veins which may thrombose and rupture with hematoma formation.
痔疮由扩张的黏膜下血管形成，此黏膜下血管可形成血栓和破损伴有血肿的形成。