Granular cell myoblastoma (GCM): contribution of three cases with genital involvement.

Granular cell myoblastoma (MGC) is an uncommon benign tumor of mesodermal origin of which no more than sixty cases with genital involvement have been reported. Among the genital organs, the labium majus of the vulva are the predilect site. We hereby contribute three new cases with a genital location (two in the vulva and one in the breast) and review the literature on the subject.