anal sinusesmedical dictionary

The grooves between the anal columns.

Synonyms: Morgagni's sinus.

Pockets or crypts in the columnar zone of the anal canal between the anocutaneous line and the anorectal line; the sinuses give the mucosa a scalloped appearance.

Synonyms: sinus anales, anal crypts, Morgagni's crypts, rectal sinuses.

(05 Mar 2000)

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