Leukemic infiltration of colon; an unusual cause for massive melena.
D003110:Colonic Neoplasms; D006801:Humans; D007938:Leukemia / Q000150:complications*; D017254:Leukemic Infiltration; D008551:Melena / Q000209:etiology*
COLON/neoplasms; LEUKEMIA/complications; MELENA/etiology and pathogenesis