The clinical findings of bone marrow necrosis in 13 patients undergoing bone marrow examination to investigate a peripheral blood cytopenia or leukoerythroblastic blood smear were reviewed and compared to those in the literature. Excluding sickle cell disease, all cases of bone marrow necrosis diagnosed during life were associated with a neoplastic process involving the marrow. A myeloproliferative disorder was found in five patients, metastatic carcinoma in five patients, a lymphoma in two patients, and both a myeloproliferative disorder and metastatic carcinoma in one patient. Marrow necrosis was found to involve the marrow at multiple sites in a piecemeal fashion with areas of necrotic marrow and structurally intact marrow adjacent to each other. Severe bone pain without roentgenographic abnormality was the major symptom in 85% of the patients. Marrow and fat emboli, hypercalcemia and peripheral blood cytopenias were identified as direct complications of marrow necrosis. The prognosis of patients with marrow necrosis secondary to neoplastic disease was found to be extremely poor with a median survival of less than one month. However, one patient responded to antineoplastic chemotherapy and showed healing of the bone marrow.
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