Rosenblum G A
J Dermatol Surg Oncol. 1985 Oct;11(10):1018-20. doi: 10.1111/j.1524-4725.1985.tb01388.x.
This case report illustrates the pluripotential nature of the hair matrix cells in nevus sebaceus. Syringocystadenoma papilliferum and basal cell epithelioma both developed in the same scalp lesion. The staged surgical excision is illustrated.