Congenital papillated apocrine cystadenoma: a mixed form of hidrocystoma, hidradenoma papilliferum, and syringocystadenoma papilliferum.

Two small congenital tumors on the left thigh of an 8-year-old boy were excised. Their histologic picture was peculiar in that they presented features in common with apocrine hidrocystoma, syringocystadenoma papilliferum, and hidradenoma papilliferum.