Multifocal basal-cell carcinomas in the Nevus sebaceus of Jadassohn.

A lesion of nevus sebaceus with multifocal basal-cell carcinomas was excised by Mohs' fresh-tissue technique. Histologically, most of the foci of basal-cell carcinomatosis were of the superficial type, but the few more deeply situated foci had adamantinoid features. The malignancies extended well beyond the clinically discernible margins of the nevus sebaceus. Spontaneous healing of the wound of ablation resulted in a satisfactory appearance.