[Granulocytic sarcoma of the maxillary sinus: a pediatric case report].

Background: Granulocytic sarcoma is a rare malignant extramedullary neoplasm of myeloid precursor cells, occuring before or after onset of leukaemia. Involvement of the head and neck region is rare, generally concerning the orbit.

Aim: To illustrate imaging findings of granulocytic sarcoma in an unusual location; maxillary sinus.