Occult lung carcinoma.
D000230:Adenocarcinoma / Q000175:diagnosis*; D000368:Aged; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis* / Q000601:surgery; D008479:Mediastinal Neoplasms / Q000175:diagnosis*; D013903:Thoracic Surgery; D013909:Thorax / Q000601:surgery