The value of T2 shading and T2 dark spot sign in the differential diagnosis of ovarian endometrial cysts, other hemorrhagic cysts and non-hemorrhagic cystic lesions

YIN Bing; LI Wen-hua; CHU Cai-ting; LI Qian-qian; BAO Lei; YIN Qiu-feng

Journal of China Clinic Medical Imaging ›› 2015, Vol. 26 ›› Issue (10) : 723-727.

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The value of T2 shading and T2 dark spot sign in the differential diagnosis of ovarian endometrial cysts, other hemorrhagic cysts and non-hemorrhagic cystic lesions

YIN Bing1, LI Wen-hua1, CHU Cai-ting1, LI Qian-qian2, BAO Lei1, YIN Qiu-feng1

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Abstract

Objective: To assess the value of T2 shading and T2 dark spot sign in the differential diagnosis of ovarian endometrial cysts, other hemorrhagic cysts and ovarian non-hemorrhagic cystic lesions. Methods: The sensitivity, specificity and accuracy of T2 shading and T2 dark spot sign in differentiating these 3 kinds of diseases were calculated through a MRI study of ovarian endometrial cysts in 67 patients, other hemorrhagic cysts in 12 patients and ovarian non-hemorrhagic cystic lesions in 33 patients. Results: The sensitivity, specificity and accuracy of T2 shading in distinguishing ovarian endometrial cysts from other hemorrhagic cysts and ovarian hemorrhagic cysts from non-hemorrhagic cystic lesions were 87.95%, 75.00%, 86.32% and 80.00%, 100%, 85.16% respectively. The sensitivity, specificity and accuracy of T2 dark spot sign(Ⅰ) in discriminating ovarian endometrial cysts and other hemorrhagic cysts were 25.30%, 100%, 34.74%. Conclusions: T2 shading has high sensitivity but only moderate specificity in the differential diagnosis of ovarian endometrial cysts and other hemorrhagic cysts. T2 shading has relatively high sensitivity and extremely high specificity in discriminating ovarian hemorrhagic cysts from non-hemorrhagic cystic lesions and may be the characteristic feature of the former lesions. Though with low sensitivity, T2 dark spot sign(Ⅰ) has extremely high specificity in differentiating ovarian endometrial cysts from other hemorrhagic cysts and may be the characteristic feature of ovarian endometrial cysts.

Key words

Ovarian cysts / Magnetic resonance imaging

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YIN Bing;LI Wen-hua;CHU Cai-ting;LI Qian-qian;BAO Lei;YIN Qiu-feng. The value of T2 shading and T2 dark spot sign in the differential diagnosis of ovarian endometrial cysts, other hemorrhagic cysts and non-hemorrhagic cystic lesions[J]. Journal of China Clinic Medical Imaging. 2015, 26(10): 723-727