Abdominal imaging
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The purpose of this study was to retrospectively assess the diagnostic performance of diffusion-weighted imaging (DWI) and dynamic contrast-enhanced imaging (DCEI) at 3T in predicting locally recurrent prostate cancer after radiation therapy. Twenty-four patients with a rising prostate-specific antigen level after treatment with radiation therapy underwent prostate MR imaging at 3T, followed by transrectal ultrasound-guided biopsy. MRI findings and biopsy results were correlated in six prostate sectors of both peripheral zones. ⋯ The accuracy of DWI, DCEI and combined DCEI and DWI was greater than that of T2WI. A significantly greater Az was determined for combined DCEI and DWI (Az = 0.863, P < 0.05) as compared with T2WI, DCEI, and DWI. For predicting locally recurrent prostate cancer after radiation therapy, our preliminary results suggest that the use of either DWI or DCEI is superior to the use of T2WI.
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Giant hepatic artery aneurysm is a very rare vascular lesion, but can be detected incidentally during abdominal imaging. We report the sonographic and computed tomography (CT) features of a giant hepatic artery aneurysm in a 52-year-old woman presenting with vague abdominal discomfort. This report illustrates that a giant hepatic artery aneurysm can manifest as an incidental large mass in the porta hepatis, and we discuss the role of sonography and CT in the diagnosis of the lesion and review the natural history and clinical presentation of hepatic artery aneurysm.