Myeloid sarcoma.

Pantanowitz L, Thompson L.
Ear Nose Throat J. 2005 Aug;84(8):470-1.
FIRST PARAGRAPH: Myeloid sarcoma (MS) is an extramedullary myeloid tumor (granulocytic sarcoma) that can occur in one of three clinical settings: (1) in patients who have a history of acute myeloid leukemia (AML), during active disease or a recurrence; (2) in patients with chronic myeloproliferative disorder or myelodysplastic syndromes, who are at increased risk of blast transformation or acute leukemia; or (3) in patients with no history of hematologic disease, although it commonly predates the development of leukemia, often within 1 year.
PubMed ID: 16220848
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