The authors report the case of a 50-year-old woman with a benign intermuscular lipoma of the gluteus compressing the sciatic nerve in its course through the sciatic notch. This benign soft-tissue tumor extended into the pelvis, displacing the rectum laterally. Resection was necessary to alleviate symptoms and prevent irreversible damage of the nerve. Wide exposure of the piriformis muscle and sciatic nerve via a transgluteal approach allowed safe lesion removal, and thus avoiding a laparotomy to resect the intrapelvic extension of the tumor. This report features a curious case of soft-tissue tumor growth across the sciatic foramen forming an inverted sciatic hernia. The authors' proposed approach was simple and safe and avoided a laparotomy.
Address correspondence to: Eudaldo López-Tomassetti Fernández, M.D., Department of Surgery, Avenida Marítima del Sur, s/n, Las Palmas, Las Palmas de Gran Canaria 35016, Spain. email: email@example.com.Please include this information when citing this paper: published online August 17, 2012; DOI: 10.3171/2012.7.JNS111714.