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Figure 1. A 52-year-old woman with an extrinsic ureteral obstruction caused by a metastasis of an ovarian carcinoma. (a) Maximum intensity projection (MIP) image from an unenhanced T2 weighted MR urograph (MRU) shows a left ureteral obstruction (arrow). Note the changes of chronic hydronephrosis and hydroureter. (b) The axial standard T2 weighted turbo spin echo (TSE) image visualizes a soft tissue mass with heterogeneous signal intensity surrounding the ureter (arrowheads).
