A 47-year-old white man presented with a 6-month history of what he thought was a cyst on his left upper back area (Figure 1 and Figure 2). The cyst had been foul smelling for some time and had recently begun to bleed. His medical history was significant for schizophrenia. His only medication was chlorpromazine.
Eisen DB, Lack EE, Boisvert M, Nigra TP. Giant Tumor of the Back. Arch Dermatol. 2002;138(9):1245–1250. doi:10.1001/archderm.138.9.1245
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