Anocutaneous line

The anocutaneous line, also called the Hilton white line or intersphincteric groove, is a boundary in the anal canal.[1]

Anocutaneous line
The interior of the anal canal and lower part of the rectum. (Line not shown but region is visible.)
Details
SystemAlimentary system
Identifiers
Latinlinea anocutanea
TA98A05.7.05.012
TA23019
FMA15715
Anatomical terminology

Below the anocutaneous line, lymphatic drainage is to the superficial inguinal nodes.[2]

The anocutaneous line is slightly below the pectinate line and a landmark for the intermuscular border between internal and external anal sphincter muscles.

The anocutaneous line represents the transition point from non-keratinized stratified squamous epithelium of the anal canal to keratinized stratified squamous epithelium of the anus and perianal skin.[3]

In live persons, the color of the line is white, hence the alternative name. It is named for John Hilton.[4]

See also

References

  1. Ewing MR (July 1954). "The white line of Hilton". Proceedings of the Royal Society of Medicine. 47 (7): 525–30. doi:10.1177/003591575404700706. PMC 1918929. PMID 13185975.
  2. "Pelvis". Archived from the original on 2007-10-21. Retrieved 2007-12-09.
  3. "The Digestive System". Retrieved 2009-01-14.
  4. synd/3030 at Who Named It?


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