title: Apparent right midlung mass in a dyspneic man.
mesh_terms: D003937:Diagnosis, Differential; D004417:Dyspnea / Q000150:complications; D006333:Heart Failure / Q000150:complications; D006801:Humans; D008171:Lung Diseases / Q000000981:diagnostic imaging*; D008175:Lung Neoplasms / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D011859:Radiography