Michi Shinohara

All articles by Michi Shinohara

Proliferating trichilemmal tumor (proliferating tricholemmal tumor, proliferating pilar cyst)

Are You Confident of the Diagnosis? What you should be alert for in the history Proliferating trichilemmal tumor (PTT) typically presents as cystic nodules on the scalp of elderly females, although they can arise at other sites and in males. PTT may be asymptomatic, but can be painful if inflammed or ulcerated. Patients report a…

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