Primary duodenal embryonal rhabdomyosarcoma in adults: a case report.

Rhabdomyosarcoma (RMS) is a soft tissue sarcoma that histologically resembles embryonic skeletal muscle. It is a rare malignancy in adults with a predilection in the head and neck, the genitourinary tract, and other extremities. However, RMS of the gastrointestinal tract is an even rarer condition that merits presentation and discussion. Here, we report on a case of primary duodenal embryonal RMS in an adult.