title: A 74-year-old man with a lung mass, arthritis, and difficulty walking.
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis*; D000368:Aged; D001168:Arthritis / Q000175:diagnosis; D006801:Humans; D008124:Locomotion; D008168:Lung / Q000000981:diagnostic imaging / Q000473:pathology; D008175:Lung Neoplasms / Q000175:diagnosis*; D008297:Male; D011379:Prognosis; D011859:Radiography; D013117:Spinal Cord Compression / Q000209:etiology; D013125:Spinal Neoplasms / Q000556:secondary