Orphanet: Proliferating trichilemmal cyst

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Disease definition

A rare large, multinodular, usually benign, tumor that is generally located in the posterior part of the scalp in aged women (over 50 years). It first appears as a painless nodule that later grows into a solid or partially cystic tumor that is mobile over the underlying subcutaneous tissues. It can present ulceration, inflammation or even bleeding and can cause necrosis of the adjacent tissues.

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Proliferating trichilemmal cyst

ORPHA:492

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