An unusual cause of obstructed defecation.

Obstructed defecation is one subtype of constipation, and may be due to functional or mechanical causes. Here, we report an unusual cause, never described before, of obstructed defecation due to a large uterine myoma that reverted to normal bowel habits after surgery. The importance of an accurate evaluation of the causes of constipation is highlighted, to recognize potential curable factors.