Hemifacial mixed appendageal tumor in an infant

We believe this to be the first report of a unilateral mixed appendageal tumor without comedones on the face of an infant. Histologically, the tumor had eccrine, apocrine, and basaloid features. The tumor lobules closely resembled islands of basal cell carcinoma. After reviewing the literature, we speculate that some previous case reports of unilateral basal cell nevus were actually appendageal tumors with basaloid differentiation and not true basal cell carcinomas.