Orbital histiocytic sarcoma in a 2-year-old child.

Histiocytic sarcoma (HS) is an exceedingly rare hematologic malignancy that typically presents in the skin, gastrointestinal tract, and lymph nodes. Few cases of HS have been reported in the head and neck. This study describes the case of a 2-year-old girl presenting with 2 weeks of left lower eyelid swelling. Diagnostic testing and biopsy revealed a large… (More)

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