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Department of Nuclear Medicine, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan, PR ChinaNuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, Sichuan, PR China
Address correspondence to: Zhanwen Huang, MD, Department of Nuclear Medicine, The Affiliated Hospital, Southwest Medical University, No 15 TaiPing St, Jiangyang District, Luzhou, Sichuan, PR China. 646000.
Department of Nuclear Medicine, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan, PR ChinaNuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Luzhou, Sichuan, PR China
A 62-year-old-man presented with 6 month history of sacrococcygeal pain and difficulty
urinating. Digital rectal examination revealed unsymmetrical enlargement of the prostate,
which felt nodular on the anterior rectal wall. Pelvic MRI showed a well-defined heterogeneous
mass extending from the sacrum and accompanied by bone destruction (Fig. 1A, B). The lesions were predominantly isointense on T1-weighted images (A, arrowhead)
and a mixed high signal on T2-weighted images and DWI (B, C, arrowhead). Additionally,
a mass with a low signal on T2-weighted images (B, arrow) and a high signal on DWI
(C, arrow) was seen in the peri-prostatic zone.
Figure 1MRI images. (A-C) Sagittal T1/T2-weighted images and DWI, showing a heterogeneous
mass with bone destruction. (B and C) Sagittal T2-weighted images and DWI showing
an irregular mass in the left posterior part of the prostate.
