1Olgyai G, Horv6th V, Banga P, et al. Extraskeletal osteosarcoma located to the gallbladder. HPB (Oxford) , 2006, 8:65.
2Sablof B,Munden RF, Melhem Al,et al. Extraskeletal osteosareoma of the pleura. MR Am J Roenthenol, 2003, 180:972.
3Minami H, Wakita N, Kawanishi Y, et al. Primary osteosarcoma of heart with severe congestive heart failure. Jpn J Thorac Cardiovasc Surg,2000, 48:607.
4Lee JS, Fetsch JF,Wasdhal DA,et al.A review of 40 patients with extraskeletal osteosarcoma. Cancer, 1995,76:2253-2259.
5Rao U, Cheng A, Didolkar MS. Extraosseous osteogenic sarcoma: clinicopathological study of eight cases and review of literature. Cancer,1978,41:1488-1496.