Key Words: Hybrid nerve sheath tumor intramuscular schwannoma neurofibroma magnetic resonance imaging Hybrid nerve sheath tumor (HNST) is a recently recognized soft-tissue tumor with combined features of more than one type of conventional benign peripheral nerve sheath tumors. It usually presents as a painless, subcutaneous/dermal mass and often affects young adults, with no sex predilection (1). Pain or neurological deficit is uncommon unless the tumor reaches a certain size.
