Masse pelviche: diagnosi differenziale di un caso di neurofibromatosi simulante cisti ovarica

INTRODUCTION: ultrasonography represents the gold standard in differential diagnosis of adnexial masses. CASE REPORT: a 32 y.rs woman comes in our Department for occasional finding of an ovarian cysts. Transvaginal ultrasound examination confirms the presence of a simple cystic mass of the left ovary. Neoplastic markers are all negative. The patient underwent operative laparotomy. Left adnexial region appears to contract tenacious adherences with postero-lateral peritoneum of the pelvis. The cyst results completely attached to omolateral ovarium. FNA has been performed for cytologic examination. After adhesiolysis we notice the cyst origin from the retroperitoneum, laterally to L5-S1. Cytologic exam results negative. RMI of the lumbar-sacral rachis suggests the hypothesis of neurofibromatosis, soon after confirmed by cytogenetic examination. DISCUSSION: sonographic imaging is not always capable to determine the origins and the nature of a pelvic mass. It could be useful to associate ultrasound examination with other imaging techniques or to choose a surgical approach.