caa a22 4500 605493952 CHVBK 20210128100523.0 cr unu---uuuuu 210128e20150301xx s 000 0 eng 10.1007/s00261-014-0330-7 doi (NATIONALLICENCE)springer-10.1007/s00261-014-0330-7 MR manifestations of uterine polypoid adenomyoma [Elektronische Daten] [Mayumi Takeuchi, Kenji Matsuzaki, Masafumi Harada] Purpose: Polypoid adenomyoma (PA) is an uncommon benign tumor of the uterus appearing as a submucosal polypoid mass, or rarely as a subserosal polypoid mass. PA should be differentiated from atypical polypoid adenomyoma or malignant uterine tumors. The purpose of our case series is to evaluate magnetic resonance (MR) manifestations of PA for the differential diagnosis. Methods: Seven cases with surgically proven PA, five submucosal, and two subserosal, were evaluated. MR imaging findings including contrast enhancement in six cases (four cases with dynamic contrast-enhanced MR study), diffusion-weighted imaging (DWI) in five cases, and susceptibility weighted imaging (SWI) in two cases were retrospectively reviewed. Results: All seven lesions exhibited isointensity compared with the myometrium and 4 of 7 lesions (57%) contained high signal intensity hemorrhagic areas on T1-weighted images. On T2-weighted images, signal intensity was variable and all seven lesions contained cysts. None of five lesions with DWI exhibited high signal intensity compared with the normal myometrium. All six lesions showed intense contrast enhancement similar to that of the myometrium on post-contrast T1-weighted images. Punctate low intensity areas reflecting blood contents were revealed in all two lesions with SWI. Conclusions: Submucosal or subserosal polypoid masses containing hemorrhagic areas, and cysts reflecting functional endometrium and dilatation of endometrial glands are suggestive for PA. Intense contrast enhancement similar to that of the myometrium may be another characteristic finding for PA. Springer Science+Business Media New York, 2014 Uterus nationallicence Polypoid adenomyoma nationallicence Magnetic resonance imaging (MRI) nationallicence Diffusion-weighted imaging (DWI) nationallicence Takeuchi Mayumi Department of Radiology, University of Tokushima, 3-18-15, 7708503, Kuramoto-cho, Tokushima, Japan aut Matsuzaki Kenji Department of Radiology, University of Tokushima, 3-18-15, 7708503, Kuramoto-cho, Tokushima, Japan aut Harada Masafumi Department of Radiology, University of Tokushima, 3-18-15, 7708503, Kuramoto-cho, Tokushima, Japan aut Abdominal Imaging Springer US; http://www.springer-ny.com 40/3(2015-03-01), 480-487 0942-8925 40:3<480 2015 40 261 https://doi.org/10.1007/s00261-014-0330-7 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 review-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00261-014-0330-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Takeuchi Mayumi Department of Radiology, University of Tokushima, 3-18-15, 7708503, Kuramoto-cho, Tokushima, Japan aut NATIONALLICENCE 700 1- Matsuzaki Kenji Department of Radiology, University of Tokushima, 3-18-15, 7708503, Kuramoto-cho, Tokushima, Japan aut NATIONALLICENCE 700 1- Harada Masafumi Department of Radiology, University of Tokushima, 3-18-15, 7708503, Kuramoto-cho, Tokushima, Japan aut NATIONALLICENCE 773 0- Abdominal Imaging Springer US; http://www.springer-ny.com 40/3(2015-03-01), 480-487 0942-8925 40:3<480 2015 40 261