What's the difference between proctocele and rectocele?

Proctocele

Definition:

(n.) Inversion and prolapse of the mucous coat of the rectum, from relaxation of the sphincter, with more or less swelling; prolapsus ani.

Example Sentences:

(1) A deep rectogenital fossa associated with an enterocele was seen in 16 patients; 13 had a proctocele, while fecal retention was seen in 5.
(2) Internal procidentia was found in 20 patients, enterocele in 9 patients, proctocele in 10 patients, a defective opening of the anorectal junction which was ascribed to incoordination of the puborectal sling was present in 15 patients.
(3) In 11 per cent of the patients there was also an enterocele and in 3 per cent, a large proctocele.