Magnetic resonance images of a 40-year-old man. (A) The sagittal T2 weighted image showed a large T2 hyperintense cyst with a thickened T2 hypointense wall (arrowheads). A small T2 hyperintense nodule was shown at the anterior wall (arrow). (B) An axial T2 weighted image showed a large T2 hyperintense cyst with several T2 mild hyperintense polypoid nodules (arrows). (C) An enhanced axial T1 weighted image showed enhancing papillary lesions (arrows). (D) An axial T2 weighted image showed that the lesion originated from the left seminal vesicle (arrow).
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