Primary ovarian fibroma in a postmenopausal woman: A case report

INTRODUCTION: Primary ovarian leiomyoma is a rare benign tumor of the ovary seen in women between 20 and 65 years old. Clinical, ultasonographic and tumor marker data remain the best preoperative approach currently available for ovarian tumours. Only pathological examination can establish the diagnosis. CASE PRESENTATION: We describe a case of unilateral, ovarian leiomyoma. The abdomino-pelvic Computed tomography (CT) and magnetic resonance imaging (MRI) revealed a left adnexial mass. A hysterectomy without adnexal preservation was performed, and histological examination revealed a leiomyoma arising primarily in the ovary. The diagnosis was confirmed immunohistochemically. DISCUSSION: The tumor may be asymptomatic or may manifest with lower abdominal pain associated to metrorrhagia like in our case. The definitive diagnosis of these lesions is difficult prior to surgical removal. Because there is no pathognomonic symptoms or characteristic imaging findings. The correct diagnosis of an ovarian leiomyoma is confirmed immunohistochemically. CONCLUSION: This rare tumor of the ovary should be considered in the differential diagnosis of solid ovarian masses. An immunohistochemical analysis is recommended for definitive diagnosis.