The whitish mass seen here under the foreskin of a 5-year-old boy is an accumulation of desquamated epithelial cells called smegma. Lesions are characteristically smooth, round, uniform, doughy, well-circumscribed, and located in the midshaft of the penis. Smegma helps to dissect the space between the glans and foreskin and also prevents readherence.
Courtesy of Alexander K.C. Leung and C Pion Kao, MD.
