title: Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Case 1-2001. A 26-year-old man with a mass in the knee.
mesh_terms: D000328:Adult; D018771:Arthralgia / Q000209:etiology; D003131:Combined Modality Therapy; D003937:Diagnosis, Differential; D006801:Humans; D007592:Joint Diseases / Q000000981:diagnostic imaging / Q000473:pathology* / Q000532:radiotherapy / Q000601:surgery; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000473:pathology*; D008279:Magnetic Resonance Imaging; D008297:Male; D010758:Phosphorus / Q000097:blood; D011859:Radiography; D013584:Sarcoma, Synovial / Q000000981:diagnostic imaging / Q000473:pathology* / Q000532:radiotherapy / Q000601:surgery
chemical_list: D010758:Phosphorus