pectenosis

Exaggerated enlargement of the pecten band.

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pec·te·no·sis .pek-tə-'nō-səs n, pl -no·ses -'nō-.sēz or -no·sis·es a condition that affects the middle third of the anal canal and is characterized by the formation of a thick hardened ring of fibrous tissue with resulting stenosis and contracture

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pec·te·no·sis (pek″tə-noґsis) stenosis of the anal canal caused by a rigid, inelastic ring of tissue of variable width and thickness, between the anal groove and anal crypts, producing bleeding, irritation, and pain on defecation.