text: <unk>  is a rare subtype of embryonal rhabdomyosarcoma. The<unk>  subtype of embryonal rhabdomyosarcoma accounts for about 10% of all rhabdomyosarcoma cases and arises from the sub-mucosal surface of body orifices such as the vagina, bladder and cervix. The most common clinical finding is vaginal bleeding.<unk>  was first described by Guersant in 1854. Genes involved in the development of<unk>  include K-RAS gene and P53 oncogene. It is more commonly observed among girls aged 3 to 8 years old. If left untreated, patients with<unk>  may progress to develop direct extension to pelvic soft tissue structures. The mainstay of therapy for<unk>  is surgery and adjuvant multi-agent chemotherapy.
option_0: Sarcoma botryoides
option_1: Lymphangioma circumscriptum
option_2: Dermatofibrosarcoma protuberans
option_3: Steatocystoma multiplex
option_4: Dermatofibroma
option_5: Pyogenic granuloma
option_6: Trichoepithelioma
option_7: Merkel cell cancer