Anal/Rectal Abscess. flexible scope to examine your colon. Treatment options for an anal abscess. A fistula is an abnormal opening in the skin near the anus. A fistula generally requires.
Anal fissure is the most common cause of rectal bleeding in infancy. Anal fissures occur in the specialized tissue that lines the anus and anal canal, called anoderm. At a line just inside the anus (referred to as the anal verge or intersphincteric groove) the skin (dermis) of the inner buttocks changes to anoderm.
The anus is the opening to the lower gastrointestinal (GI) tract and connects to the rectum, which connects to the colon, which traveling backwards connects to the small intestine, then the stomach, then the esophagus and finally the mouth. The large bowel consists of the colon (5 feet long) and the rectum (8 inches long). Many times the rectum is referred to as the opening where stool emerges, but that is actually the anus. The rectum is 4 inches long and just upstream from the anus. Just upstream from the large bowel is the small.
The small intestine connects your stomach to your colon, and your colon then attaches to your rectum and, ultimately, your anus. The colon is about five to six feet long and about an inch or two in diameter. An external illustration of a healthy colon.
Oct 14, · Small Hard mass near anal opening About three weeks ago I noticed a small hard mass right on the opening of my anus. It has a white dome on it and is about the size of a pea.