Incision and drainage of rectal anal canal abscess

When the crypt or anal papilla is damaged by faeces, etc., bacteria invade from the wound, making the crypt and papillary inflammation. There are many branched glandular tissues at the bottom of the crypt, which makes it difficult for inflammation to absorb itself. Instead, the glands spread outward along the muscle space around the anorectum, forming abscesses everywhere. There are 5 surgical anatomical spaces around the anorectal rectum, bounded by the levator ani muscle, with two pelvic rectal spaces and one retrorectal space below, and two ischiorectal spaces below. Abscesses can form in these spaces, and abscesses can also form in the submucosal or perianal skin or subcutaneously [Figure 1]. Pelvic rectal space abscess, if not cut open and drained in time, you can pierce into the rectum, bladder, vagina or sciatic rectal space by yourself; sciatic rectal space abscess can also bypass the anal canal and penetrate the contralateral side; retrorectal space abscess can Thread into the abdominal cavity or the sciatic rectal space.