Pachydermoperiostosis with cutaneous squamous cell carcinomas

A 46‐year‐old man visited our department with masses on the face and a skin problem. Approximately 15 years ago, he had noticed marked thickening of the skin on the face and scalp, which had exaggerated progressively to produce deep wrinklings with seborrhea ( Fig. 1 ). He had profuse perspiration of the face, hands, feet, and the upper aspects of the trunk. Clinical features of pachydermoperiostosis, consisting of thickened skin folds and deep...