title: Lung cancer masquerading as atrial myxoma.
mesh_terms: D002283:Carcinoma, Bronchogenic / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006338:Heart Neoplasms / Q000175:diagnosis*; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D009232:Myxoma / Q000175:diagnosis*