title: Density of lymphoid follicles in the rectum and at the anorectal junction.
abstract: To determine the density of mucosal lymphoid follicles in 10 histologically normal rectums, including the anorectal junction, we counted the follicles macroscopically after the specimens were fixed in 10% acetic acid. The mean density in the rectum was 25.6/cm2. The mean density at the anorectal junction was slightly but not significantly higher, at 29.2/cm2. We found no significant change in follicle density with increasing age in specimens from people between the ages of 17 and 90 years.
authors.affiliation: Division of Tissue Pathology, Institute of Medical and Veterinary Science, Adelaide, Australia.
authors.forename: J M
authors.initials: JM
authors.lastname: Langman
authors.forename: R
authors.initials: R
authors.lastname: Rowland
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000473:pathology*; D001003:Anal Canal / Q000473:pathology*; D006801:Humans; D008214:Lymphocytes / Q000473:pathology; D008221:Lymphoid Tissue / Q000473:pathology*; D012007:Rectum / Q000473:pathology*; D012016:Reference Values