1. Malignant sacrococcygeal germ cell tumor in an adult;Smithers;Aust NZ J Surg,1996
2. Presacral teratoma in adult;Head;Am Surg,1975
3. Presacral tumors and cysts in adults;Uhlig;Dis Colon Rectum,1975
4. The classification of presacral cysts and tumor;McColl;Proc R Soc Med,1963
5. Malignant sacrococcygeal teraoma in an adult;Pennafort;J Can Assoc Radiol,1990