External hemorrhoids form beyond the intersphincteric groove to produce an acute pileat the anal verge.
External hemorrhoids form beyond the intersphincteric groove to produce an acute pileat the anal verge.
外痔形成超过内括约肌，在肛门边缘产生一个“急性隆起”。
External hemorrhoids form beyond the intersphincteric groove to produce an acute pileat the anal verge.
外痔形成超过内括约肌，在肛门边缘产生一个“急性隆起”。