Occult gastrointestinal bleeding, defined as bleeding that is unknown to the patient, is the most common form of gastrointestinal bleeding and can be caused by virtually any lesion in the ...
A fistula is an abnormal hole in the bowel or the bladder. A recto-urethral fistula is a hole between the urethra (urinary channel) and the rectum. This hole leads to leakage of urine into the rectum ...