P29.01: Sacral Schwannoma mimicking uterine myoma

Abstract

Benign retroperitoneal Schwannoma (also known as neurilemoma) is a rare occurrence and comprises only a small portion of the wide variety of lesions that occur in the sacral region. Sacral Schwannoma can often reach enormous dimensions before producing neurological symptoms and are difficult to diagnose at an early stage. We reported the recent case of a patient, woman, 49 year old, presented acute pelvic pain and dyspareunia. A palpable pelvic mass sticks to the uteri. An abdominal and endovaginal ultrasound revealed intramural myomas and enlarged mass pelvic, approximately 4.2 cm, of heterogeneous texture, whit regular outer borders. The sonographic appearance and location of the mass were consistent with the diagnosis of a myoma uterine pedunculated. Magnetic Resonance Imaging was done demonstrating expansive mass sacral compatible with Schwannoma. The mass was resected through a laparotomy. The pathological examination confirmed the diagnosis of Schwannoma. Primary retroperitoneal tumors are uncommon neoplasms that are difficult to diagnose preoperatively. The more complete and detailed assessment of the pelvic demonstrates the relationship between the tumor and anatomical structures is important to improve the surgical treatment.