1. Primary retroperitoneal sarcoma;Andrews;Surg., Gynec. and ObSt.,1923
2. Fibrosarcoma of pararenal region;Arenas;Bol. Inst, de med. exper. para el estud. y. trat. d. cáncer,1933
3. Extirpation of left kidney on account of huge fibroma of renal capsule weighing 37½ pounds;Bruntzelle;Berlin klin. Woch.,1882
4. Perirenal lipoma with generalized abdominal lipomatosis;Crabtree;J. Urol.,1930
5. Perirenal tumors;Day;J.A.M.A.,1923