[About a case of rhabdomyosarcoma with an aberrant expression of epithelial markers: a cause of misdiagnosis].

We present the case of an embryonal rhabdomyosarcoma of orbitary location with aberrant expression of epithelial markers in a 51-year-old female. The rhabdomyosarcoma is a rare tumor of soft tissues affecting mainly the child, but also exceptionally adults over 50. When it presents as a small round cells tumor, particularly in the region of head and neck, its differential diagnosis with several other poorly differentiated tumors may be difficult.