We report two patients initially diagnosed as having steatocystoma mul
tiplex (SM). Other cysts showed characteristics of eruptive vellus hai
r cyst (EVHC). More than 30 and 14 cysts, respectively, were removed w
ith histological hybrid characteristics of SM and EVHC. This suggests
that SM and EVCH are two closely related entities, which represent a n
aevoid malformation in the area where the sebaceous duct and hair foll
icle meet.