NCIt definition : A benign mesenchymal neoplasm characterized by the presence of spindle shaped myofibroblasts
and mast cells in a collagenous stroma. It is histologically identical to the myofibroblastoma
of breast. It usually arises from the subcutaneous tissue and the most common sites
of involvement are the inguinal/groin, paratesticular, and vulvovaginal areas.;