Sinus histiocytosis confined to the skin. Case report and review of the literature.

Sinus histiocytosis with massive lymphadenopathy is an uncommon disease affecting individuals of either sex and of all ages and ethnic backgrounds. We present a case of sinus histiocytosis confined to the skin in a 65-year-old woman whose diagnosis was coincident with herpes simplex virus infection and polybacterial urinary infection, both asymptomatic. The polymerase chain reaction for herpes simplex virus and human herpesvirus-6 from involved skin was negative. We review previously published cases of sinus histiocytosis limited to the skin.