Rectal mucosa protrudes no more than 1 inch below anus (shown on defecography)
•
External (complete) prolapse (procidentia)
All layers of rectum protrude through anus
Diagnosis made on physical exam or defecography
•
Rectosigmoid (internal) intussusception
Proximal rectal ± sigmoid mucosa telescopes into distal rectum; rarely through anus
–
Often “pinches off” base of anterior rectocele
–
Contributes to sensation of incomplete evacuation
Diagnosed on defecography or MR
•
Rectal ulcer syndrome
Traumatic or ischemic ulceration of rectal mucosa associated with disordered evacuation
Diagnosed on barium enema or sigmoidoscopy
95% of affected patients have internal intussusception
Only gold members can continue reading.
Log In or
Register to continue
Full access? Get Clinical Tree
