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Sichuan Da Xue Xue Bao Yi Xue Ban. 2012 Jan;43（1）:65-9. [Distinguishing benign from malignant incidental adrenal lesions in enhanced CT imaging]. [Article in Chinese] Yang L1, Zhao S, Hu YJ, Zhou Y, Bai J, Liu RB. Author information 1Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China.
Abstract OBJECTIVE: To characterize the differences in radiologic features between benign and malignant adrenal lesions. METHODS: Enhanced multiple-slice spiral CT images of 99 patients with adrenal tumors were reviewed retrospectively, investigating into morphological features of different kinds of adrenal lesions with Wash-in Amplitude （WA, venous phase attenuation-unenhanced attenuation） and relative wash-in ratio （RWR, WA/artery phase attenuation）. RESULTS: A combination of threshold in diameter = 3.2 cm, unenhanced attenuation = 24 HU, and RWR value = 0.879 produced 94.28% sensitivity and 98.43% specificity in diagnosing adenomas. CONCLUSION: Enhanced CT imaging improves diagnostic accuracy of incidental adrenal lesions. PMID: 22455134 [PubMed - indexed for MEDLINE]
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