Relationship between primary lung cancer and pepic ulcer in males.
D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging*; D009369:Neoplasms; D010437:Peptic Ulcer / Q000523:psychology*; D011859:Radiography; D014456:Ulcer
LUNG NEOPLASMS/radiography; PEPTIC ULCER/psychology