Abdominal ImagingDiagnostic Efficacy of T2 Dark Spot, T2 Dark Rim Signs, and T2 Shading on Magnetic Resonance Imaging in Differentiating Endometriomas From Hemorrhagic CystsCansu, Aysegul MD*; Bulut, Eser MD†; Dinc, Gulseren MD‡; Bekircavusoglu, Suleyman MD†; Eyuboglu, Ilker MD*; Guven, Emine Seda MD‡; Ahmetoglu, Ali MD*Author Information From the *Department of Radiology, Faculty of Medicine, Karadeniz Technical University; †Department of Radiology, Trabzon Kanuni Education and Research Hospital; and ‡Department of Obstetrics and Gynecology, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey. Received for publication January 17, 2019; accepted April 23, 2019. Correspondence to: Aysegul Cansu, MD, Department of Radiology, Faculty of Medicine, Karadeniz Technical University, Farabi St, 61080 Trabzon, Turkey (e-mail: [email protected]). The authors declare no conflict of interest. Journal of Computer Assisted Tomography: 7/8 2019 - Volume 43 - Issue 4 - p 619-622 doi: 10.1097/RCT.0000000000000892 Buy Metrics Abstract Objective This study aimed to evaluate the diagnostic efficacy of T2 dark spot, T2 dark rim, and T2 shading signs on magnetic resonance imaging in the differentiation of endometriomas from hemorrhagic cysts. Methods Seventy-two hemorrhagic lesions were included in this retrospective study. The presence of T2 dark spot, T2 dark rim, and T2 shading signs in the lesions and the presence of complete or incomplete rim in lesions exhibiting T2 dark rim signs were evaluated. Results Of 72 lesions, 50 were diagnosed with endometrioma and 22 were diagnosed with hemorrhagic cyst. Twenty-six of 50 endometriomas and none of the hemorrhagic cysts showed T2 dark spot sign. T2 shading was observed in 90% of endometriomas and 18% of hemorrhagic cysts. Incomplete T2 dark rim was detected in 67% of endometriomas and 21% of hemorrhagic cysts. Conclusions T2 dark spot and T2 dark rim signs could be useful for distinguishing endometriomas from hemorrhagic cysts. Copyright © 2019 Wolters Kluwer Health, Inc. All rights reserved.