Struma ovarii: CT findings |
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Authors: | Sung Il Jung Young Jun Kim Min Woo Lee Hae Jeong Jeon Jong-Sun Choi Min Hoan Moon |
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Affiliation: | (1) Department of Radiology, Konkuk University Hospital, Konkuk University School of Medicine, Seoul, Korea;(2) Department of Pathology, Dongguk University International Hospital, Dongguk University College of Medicine, Goyang, Korea;(3) Department of Radiology, Cheil General Hospital and Women’s Healthcare Center, Kwandong University School of Medicine, 1-19 Mookjung-Dong, Jung-Gu, 100-380 Seoul, Korea |
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Abstract: | Background The purpose of this study was to evaluate computed tomographic findings of struma ovarii.
Methods Computed tomography (CT) scans of 13 pathologically proven struma ovarii were retrospectively reviewed by two radiologists
in consensus. Scans were evaluated for the laterality, size, mass configuration, margins, internal architecture, presence
of intracystic high attenuation lesions on precontrast scans, and cyst wall enhancement.
Results The mean size of the tumors was 11.4 cm (range 4.7–21.0 cm). Mainly cystic (n = 8, 61.5%) or cystic (n = 5, 38.5%) appearance was common to all the tumors. All tumors were unilateral and had smooth margins. The most common internal
architecture in the tumors was multicystic architecture (n = 11, 84.6%). Eleven tumors (84.6%) showed a high attenuation lesion in the cyst portion of the mass on precontrast scans
and the attenuation ranged from 92.2 to 120.5 Hounsfield units (HU) (mean, 106.8 ± 8.8 HU). The cyst wall showed no (n = 7, 53.8%), moderate (n = 5, 38.5%), or marked (n = 1, 7.7%) enhancement after administration of contrast medium.
Conclusions On CT scans, struma ovarii appeared most often as a smooth marginated multicystic mass with a high attenuation lesion on precontrast
scans and no or moderate cyst wall enhancement. |
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Keywords: | Struma ovarii Neoplasms Computed tomography Ovary Pelvis |
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