caa a22 4500 605495092 CHVBK 20210128100529.0 cr unu---uuuuu 210128e20150601xx s 000 0 eng 10.1007/s00261-014-0257-z doi (NATIONALLICENCE)springer-10.1007/s00261-014-0257-z Magnetic resonance imaging features of ovarian fibroma, fibrothecoma, and thecoma [Elektronische Daten] [Bo Chung, Sung Park, Jong Lee, Hyun Park, Yang Kim, Yoon Oh] Objective: To retrospectively evaluate the conventional and functional (diffusion- or perfusion-weighted) magnetic resonance (MR) imaging features of ovarian fibroma, fibrothecoma, and thecoma. Materials and Methods: Histologically proven ovarian fibromas (n=19), fibrothecomas (n=7), and thecomas (n=2) were reviewed (26 patients). The morphologic and signal intensity (SI) characteristics on conventional MR imaging (n=28, all cases) were analyzed. The b 1000 signal intensity on diffusion-weighted image (DWI) (n=22) and the time-to-signal intensity curve on perfusion-weighted image (PWI) (n=7) were also analyzed. The presence and shape of the ipsilateral ovarian tissue surrounding the lesions were evaluated on T2-weighted image. Results: Twenty-two cases (79%) were predominantly solid tumor. Majority of the detected lesions exhibited the characteristic homogeneous low SI on T1- (24/28, 86%) and T2- (19/28, 68%) weighted image. Conversely, a number of lesions exhibited high SI (9/28, 32%) on T2-weighted image. Most lesions presented with a detectable ipsilateral ovary on T2-weighted image (24/28, 86%). Tumors larger than 6cm more likely showed atypical morphology (mixed solid and cystic, cystic), atypical SI (high on T1- and T2-weighted image), and large amount ascites. Larger tumor group (>6cm) was more likely diagnosed as fibrothecoma or thecoma than fibroma by pathology. On DWI, 16 lesions showed low b 1000 signal intensity (16/22, 73%). On PWI, all lesions showed curve type 1 or 2 (7/7, 100%), which tends to characterize benign lesions. All (16/16, 100%) pre-menopausal women had a detectable ipsilateral ovary, and six (60%) out of 10 post-menopausal women had a detectable ipsilateral ovary (p<0.05). Conclusions: Combining conventional morphologic and signal intensity characteristics with the findings from DWI or PWI might help differentiate ovarian fibroma, fibrothecoma, and thecoma from ovarian malignancy, although further prospective larger scale study using DWI and PWI is needed. Springer Science+Business Media New York, 2014 Fibrothecoma nationallicence Ovarian fibroma nationallicence Ovarian neoplasms nationallicence Ovary nationallicence Magnetic resonance imaging (MRI) nationallicence Chung Bo Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102, Heukseok-ro, 156-755, Dongjak-Gu, Seoul, Korea aut Park Sung Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102, Heukseok-ro, 156-755, Dongjak-Gu, Seoul, Korea aut Lee Jong Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102, Heukseok-ro, 156-755, Dongjak-Gu, Seoul, Korea aut Park Hyun Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102, Heukseok-ro, 156-755, Dongjak-Gu, Seoul, Korea aut Kim Yang Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102, Heukseok-ro, 156-755, Dongjak-Gu, Seoul, Korea aut Oh Yoon Medi-Screen Center, Kangbuk Samsung Hospital, Heungdeok1-ro 13, 446-908, Giheung-Gu, Yongin, Korea aut Abdominal Imaging Springer US; http://www.springer-ny.com 40/5(2015-06-01), 1263-1272 0942-8925 40:5<1263 2015 40 261 https://doi.org/10.1007/s00261-014-0257-z text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00261-014-0257-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chung Bo Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102, Heukseok-ro, 156-755, Dongjak-Gu, Seoul, Korea aut NATIONALLICENCE 700 1- Park Sung Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102, Heukseok-ro, 156-755, Dongjak-Gu, Seoul, Korea aut NATIONALLICENCE 700 1- Lee Jong Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102, Heukseok-ro, 156-755, Dongjak-Gu, Seoul, Korea aut NATIONALLICENCE 700 1- Park Hyun Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102, Heukseok-ro, 156-755, Dongjak-Gu, Seoul, Korea aut NATIONALLICENCE 700 1- Kim Yang Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102, Heukseok-ro, 156-755, Dongjak-Gu, Seoul, Korea aut NATIONALLICENCE 700 1- Oh Yoon Medi-Screen Center, Kangbuk Samsung Hospital, Heungdeok1-ro 13, 446-908, Giheung-Gu, Yongin, Korea aut NATIONALLICENCE 773 0- Abdominal Imaging Springer US; http://www.springer-ny.com 40/5(2015-06-01), 1263-1272 0942-8925 40:5<1263 2015 40 261