Abstract:

Strumal carcinoid tumor of the ovary (SCTO) is an exceptionally rare malignant ovarian tumor that arises secondary to a mature ovarian teratoma. It is characterized by the presence of thyroid tissue and carcinoid components in pathological tissue. The pathogenesis of SCTO is not clear. The patients commonly present with abdominal pain, but the accurate diagnosis dependes on the histopathological evaluation and immunohistochemical analysis due to its rarity and atypical presentation. We report the case of a 43-year-old woman diagnosed with SCTO. She initially presented to an external hospital with the complaints of abdominal pain accompanied by nausea and vomiting. Gynecological ultrasound revealed a pelvic mass, and she was treated with the laparoscopic right-adnexectomy. Histopathological analysis suggested SCTO. The patient was subsequently transferred to our hospital for further treatment. The immunohistochemical analysis confirmed the diagnosis of SCTO. To ensure comprehensive treatment, a subsequent surgical procedure was performed, including total hysterectomy, left salpingo-oophorectomy, high ligation of bilateral ovarian vessels, right pelvic lymphadenectomy, and partial omentectomy. Lymphatic or distant metastasis was not found in the postoperative histopathological examination. The patient did not undergo adjuvant therapy, and remained free of recurrence and metastasis during 8 month follow-up. SCTO diagnosed at an early stage is associated with a favorable prognosis. Therefore, early recognition and timely intervention are essential to improve the outcomes of SCTO patient.

Key words: Ovary, Teratoma, Carcinoid tumor, Diagnosis, Therapy, Case reports