title: Mediastinal mass with acute leukemia.
mesh_terms: D003937:Diagnosis, Differential; D006651:Histocytochemistry; D006801:Humans; D015470:Leukemia, Myeloid, Acute / Q000473:pathology*; D008223:Lymphoma / Q000473:pathology; D008479:Mediastinal Neoplasms / Q000556:secondary*; D013194:Staining and Labeling