Intestinal endometriosis: the great masquerader.

Chronic symptoms of abdominal pain and irregular bowel habits in women evoke a broad differential diagnosis including irritable bowel syndrome, infection, malabsorption, and inflammatory bowel disease. Endometriosis, a common disorder in young women that can involve the intestinal tract, deserves consideration as well. Intestinal endometriosis is typically asymptomatic; however, when symptoms occur, they can mimic those of irritable bowel syndrome. Identifying intestinal endometriosis can be challenging, but historical points and key clinical features aid in diagnosis.