A 70-year-old man presented to the dermatology clinic for a routine full-body skin examination that revealed multiple asymptomatic, dome-shaped, white papules on the left posterior earlobe. The patient had a personal and family history of spontaneous pneumothorax and no history of cancer. A shave biopsy of one of the papules was performed. A diagnosis of trichodiscoma was made based on these histologic findings. The patient was sent for genetic testing for the associated folliculin (FLCN) gene, which was positive and thereby confirmed the diagnosis of Birt-Hogg-Dub茅 syndrome.
