Abstract
The case of a 41-year-old woman who underwent a combined transretroperitoneal and transgluteal approach for the extirpation of a solitary fibrous tumor extending in and out of the pelvis at the right sciatic notch (sciatic notch tumor) is presented. Computed tomography and magnetic resonance imaging showed an enhanced, dumbbell-shaped pelvic tumor extending out of the pelvis through the right sciatic foramen, compressing the right sciatic nerve. The histological findings of a biopsy specimen showed a solitary fibrous tumor with positive staining for CD34 and the presence of NAB2-STAT6 gene fusions. Through a combined transretroperitoneal and transgluteal approach, the tumor was completely removed, preserving the pelvic bone and the right sciatic nerve. The patient had an unremarkable postoperative course with improvement of right leg paralysis. Currently, on follow-up 3 years and 6 months after the operation, the patient still has no signs of tumor recurrence. Thus, a combined approach can be safely performed with minimal intraoperative blood loss and can achieve curative resection for soft-tissue tumors extending in and out of the pelvis, such as a sciatic notch tumor.
