Browse the corpus

Walk the Even Hospital Database by book and chapter — the raw source passages that ground Ask, DDx, and the rest.

1 passage

contentuptodate· Content· item f12_22_12647

©2013 UpToDate ® Print Email Anatomy of the anal canal and rectum This figure illustrates the anatomy of the rectum and anal canal. Note the anal crypts and glands; 90 percent of anal rectal fistulas originate in a cryptoglandular abscess. Also note the relationship of the crypts and glands to the internal and external sphincters.