anal abscess
anoplasty
anoscopy
colon cancer surgery
colovaginal fistula
colovesical fistula
diverticular disease
endorectal advancement flap (eraf)
endoscopic hemorrhoid band ligation
endoscopic mucosal resection
excision of external hemorrhoidal tags and papillae
fistula enterocutaneous
hemorrhoidectomy
idiopathic megacolon
incision and drainage of deep pelvirectal abscess
intestinal pseudo obstruction
proctectomy
proctoplasty for stenosis
pseudopolyposis of colon
recurrent colorectal cancer
repair of colovaginal fistula
severe dysplasia of rectum
stoma complications
subtotal colectomy
ulcerative colitis