title: Unusual presentation of lymphoma (a case report).
mesh_terms: D003937:Diagnosis, Differential; D006338:Heart Neoplasms / Q000556:secondary*; D006801:Humans; D007680:Kidney Neoplasms / Q000556:secondary*; D008228:Lymphoma, Non-Hodgkin / Q000175:diagnosis / Q000556:secondary*; D008297:Male; D008875:Middle Aged; D012186:Retroperitoneal Neoplasms / Q000556:secondary*