title: Abdominal mass as manifestation of isolated extramedullary relapse in a child with acute lymphoblastic leukemia (ALL).
mesh_terms: D000008:Abdominal Neoplasms / Q000556:secondary* / Q000628:therapy; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D002648:Child; D006801:Humans; D007945:Leukemia, Lymphoid / Q000188:drug therapy*; D008297:Male; D012008:Recurrence