Malignant mesenchymoma of the lung.
D006801:Humans; D008168:Lung / Q000473:pathology; D008175:Lung Neoplasms / Q000175:diagnosis / Q000473:pathology*; D008297:Male; D008637:Mesenchymoma / Q000175:diagnosis / Q000473:pathology*; D008875:Middle Aged; D014132:Trachea / Q000473:pathology