Health / Medical Topics |
Anal Squamous Zone
The lower third segment of the anal canal. It is covered with stratified squamous epithelium. (NCI Thesaurus)
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A squamous cell carcinoma (SCC) arising from the anal canal or the anal margin (perianal skin). Human papillomavirus is detected in the…
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Furrows, with pouchlike recesses at the lower end, separating the rectal columns.
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A malignant mesenchymal neoplasm arising from the anus. Representative examples include leiomyosarcoma, rhabdomyosarcoma, and Kaposi sarcoma.
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A malignant mesenchymal tumor with skeletal muscle differentiation affecting the anus.
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The area that includes the anus and the perianal skin.
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A non-neoplastic or neoplastic polypoid lesion that arises from the anus. Representative examples include the fibroepithelial polyp and squamous papilloma. …
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