05212022Sat
Last updateWed, 09 Mar 2022 4am

Trabecular carcinoid tumor arising from a mature cystic teratoma

Hsiao‑Chen Chiu, Yi‑Lin Chen*

Department of Obstetrics and Gynecology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei, Taiwan
 

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Open Access funded by Buddhist Compassion Relief Tzu Chi Foundation

 

 

Abstract
Mature cystic teratomas (MCTs) are common benign tumors of the ovary. Coexistence of a carcinoid tumor inside an MCT is extremely rare. We present a 40‑year‑old woman who had intermittent abdominal pain and urinary frequency. An adnexal mass was detected during physical examination. Ultrasound indicated a 12.3 cm × 10.7 cm left ovarian mass. Surgical excision of the mass was performed, and histopathological examination revealed an MCT with three germ layers. The microcarcinoid tumor arising from an MCT showed a cord to trabecular pattern. The pathological diagnosis was a trabecular carcinoid tumor arising in an MCT. The patient did not present with carcinoid syndrome, and no recurrence was observed after 12 months of follow‑up.
 
Keywords: Carcinoid Tumor, Ovary, Teratoma

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