title: [Burkitt cell leukemia with marked infiltration in psoas muscles presenting with an initial symptom of acute abdomen].
mesh_terms: D000006:Abdomen, Acute / Q000209:etiology*; D000368:Aged; D001752:Blast Crisis; D002051:Burkitt Lymphoma / Q000473:pathology*; D003937:Diagnosis, Differential; D006801:Humans; D007945:Leukemia, Lymphoid / Q000473:pathology*; D008297:Male; D009132:Muscles / Q000473:pathology*