Preoperative angiography with embolization and radiofrequency ablation as novel adjuncts to safe surgical resection of a large, vascular sacrococcygeal teratoma.

Sacrococcygeal teratomas (SCTs) can present a challenging problem and can be associated with significant perinatal morbidity and mortality. A female child was born at 36 weeks' gestation with a large, vascular Type 1 SCT originally identified by prenatal ultrasound. A CT scan showed two large feeding vessels arising from both internal iliac arteries that were successfully embolized during angiography. A radiofrequency probe was then used to ablate a zone between normal tissue and the tumor. The SCT was subsequently surgically excised with minimal blood loss. This case is presented to illustrate two useful and previously unreported postnatal adjuncts to the surgical treatment of massive, hypervascular sacrococcygeal tumors.