Acute lymphocytic leukemia in children presenting with bone marrow necrosis

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Abstract
Bone marrow necrosis has been regarded as an indicator of very poor prognosis in malignant disease. The cause and incidence are unknown, and reports of treatment response are few. We describe four children with marrow necrosis at presentation with acute lymphocytic leukemia (ALL), all of whom entered remission with standard treatment showing complete marrow healing. The bleak outlook for patients with marrow necrosis based on early experience in adults with disseminated malignancy does not appear to apply to children with ALL. The incidence of marrow necrosis at diagnosis of childhood ALL is 1%.