Hyperpigmentation after Foamed Bleomycin Sclerotherapy for Vascular Malformations.

The present report documents 6 patients who developed distinctive hyperpigmented skin lesions after bleomycin sclerotherapy for vascular malformations of the face, neck, and extremities. The patients ranged in age from 2 to 65 years and included both black and white and male and female patients. The bleomycin treatment dose varied from 15 to 45 U, with 5 of the 6 patients receiving foamed bleomycin. The hyperpigmented lesions were near the patient's vascular anomaly and attributable to postprocedural cutaneous pressure (eg, electrocardiographic [ECG] leads or tape). Hyperpigmentation faded slowly over time but was visible up to 3 years after the procedure.