Primary ovarian carcinoid: Value of octreotide scintigraphy for diagnosis and correlation with other cross-sectional imaging modalities and pathology

Primary carcinoid tumors of the ovary are uncommon and usually are associated with the unilateral development of a teratoma. An insular carcinoid derived from the midgut is the most common pattern, and many patients have the typical carcinoid syndrome, such as facial flushing, diarrhea, and bronchospasm. A trabecular carcinoid derived from the hindgut or foregut is considered rare. We report a case of a primary trabecular carcinoid tumor found on several imaging studies (CT, ultrasonography, and MR imaging) to mimic a uterine leiomyoma in which the correct diagnosis was made by urinary 5-HIAA determination and confirmed by octreotide scintigraphy.