A case of basal cell carcinoma of the skin in a patient with systemic sclerosis.

A 46-year-old man complained of pain and stiffness in both hands. Most of his fingertips were shortened, and Raynaud's phenomenon was evident. The skin on his face and hands was hard and taut. An ulcerating mass measuring 3.2 x 2.5 cm was found on his left infraorbital area. Biopsy revealed basal cell carcinoma. Antinuclear antibody and anti-topoisomerase I antibody were strongly positive. A high-resolution computed tomography (CT) scan of the lungs revealed interstitial fibrosis. Esophageal manometry showed low lower esophageal sphincter pressure and gastroesophageal reflux. Under the diagnosis of basal cell carcinoma accompanying systemic sclerosis (SSc), surgical excision of the mass was performed, and immunosuppressant and vasodilator therapies were conducted.