WHO classification of anal canal tumors
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The World Health Organisation classifies the anal canal neoplasms into intraepithelial neoplasms and invasive neoplasms which are further divided to epithelial and non-epithelial tumours and secondary lesions:
Anal intraepithelial neoplasia
Epithelial tumours
- squamous cell carcinoma of anal canal
- adenocarcinoma of anal canal
- mucinous adenocarcinoma of anal canal
- small cell carcinoma of anal canal
- undifferentiated carcinoma of anal canal
Non-epithelial tumours
Carcinoid tumours
Melanoma
Secondary tumours
- direct extension from adjacent organs: rectal, cervical, and prostate carcinomas
See also
-<p>The World Health Organisation classifies the <a href="/articles/anal-cancer">anal canal neoplasms</a> into intraepithelial neoplasms and invasive neoplasms which are further divided to epithelial and non-epithelial tumours and secondary lesions:</p><p>Anal intraepithelial neoplasia </p><h5>Epithelial tumours</h5><ul>- +<p>The World Health Organisation classifies <a href="/articles/anal-cancer">anal canal neoplasms</a> into intraepithelial neoplasms and invasive neoplasms which are further divided to epithelial and non-epithelial tumours and secondary lesions:</p><h5>Epithelial tumours</h5><ul>
-</ul><h5>Carcinoid tumours</h5><ul><li><a href="/articles/carcinoid-tumour-of-anal-canal">carcinoid tumour of anal canal</a></li></ul><h5>Melanoma </h5><ul><li><a href="/articles/melanoma-of-anal-canal">melanoma of anal canal</a></li></ul><h5>Secondary tumours</h5><ul><li>direct extension from adjacent organs: rectal, cervical, and prostate carcinomas</li></ul><h4>See also</h4><ul><li><a title="Anal margin neoplasms" href="/articles/anal-margin-neoplasms">anal margin neoplasms</a></li></ul><p> </p>- +</ul><h5>Carcinoid tumours</h5><ul><li><a href="/articles/carcinoid-tumour-of-anal-canal">carcinoid tumour of anal canal</a></li></ul><h5>Melanoma </h5><ul><li><a href="/articles/melanoma-of-anal-canal">melanoma of anal canal</a></li></ul><h5>Secondary tumours</h5><ul><li>direct extension from adjacent organs: rectal, cervical, and prostate carcinomas</li></ul><h4>See also</h4><ul><li><a href="/articles/who-classification-of-anal-margin-neoplasms">anal margin neoplasms</a></li></ul><p> </p>
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