Abstract
Complete excision is essential for the sacrococcygeal teratoma. Since these tumors adhere to the coccyx, the coccyx should be removed in continuity with the tumor. Nevertheless, recurrence of this benign tumors occurs infrequently. We experienced 18 year-old girl with a recurrenced huge intrapelvic sacrococcygeal teratoma 18 years after the resection. She visited our hospital complaining severe pain of the buttocks. Large mass was palpated in the right lower quadrant of the abdomen. Clinical investigations by CT and MRI revealed a recurrent sactococcygeal teratoma. Excised tumor was a benign cystic mass, 25X15X15cm, with a polyp, 7X3cm, on the inner surface. Now she has been free from the disease for 23 months since the second operation.