Michi Shinohara

Are You Confident of the Diagnosis? What you should be alert for in the history Pilar or trichilemmal cysts typically present as asymptomatic, cystic to firm dermal or subcutaneous nodules. The most common location is the scalp, although they can develop on other sites as well. Patients usually report a stable size or history of…

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…