Myelolipoma : Microscopic Features
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Microscopic Features: The bone marrow elements in a myelolipoma show normal trilineage hematopoiesis but with increased number of megakaryocytes. Uncommon findings include calcification and osseous metaplasia. If only mature myeloid cells (granulocytes) are seen, it does not constitute a myelolipoma. Similarly, if a monomorphic population of immature myeloid cells is present, it may represent leukemic involvement within a lipoma.