Mucosal Prolapse
Rectal mucosal prolapse (mucosal prolapse, anal mucosal prolapse) is a sub-type of rectal prolapse, and refers to abnormal descent of the rectal mucosa through the anus. It is different to an internal intussusception (occult prolapse) or a complete rectal prolapse (external prolapse, procidentia) because these conditions involve the full thickness of the rectal wall, rather than only the mucosa (lining).
Mucosal prolapse is a different condition to prolapsing (3rd or 4th degree) hemorrhoids, although they may look similar.
Rectal mucosal prolapse can be a cause of obstructed defecation (outlet obstruction). and rectal malodor.
Read more about this topic: Internal Intussusception