Unilateral syringoma of the face associated with hyperthyroidism.

Syringomas are benign tumors derived from the intraepidermal portion of eccrine sweat ducts. They usually occur on the periobital area, but have also been found on the scalp, forehead, cheeks, axillae, abdomen, extremities, genitalia, and buttocks. We describe a patient with an unusual presentation of unilateral syringoma of the face associated with hyperthyroidism.