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Fig. 2 | Insights into Imaging

Fig. 2

From: Cross-sectional imaging of complicated urinary infections affecting the lower tract and male genital organs

Fig. 2

Polymicrobial urinary tract infection (UTI) complicated by mural bladder abscess in a 67-year-old man with a history of benign prostatic hyperplasia (BPH) and indwelling catheter (thick arrows). Four months earlier, CT (a) revealed contracted urinary bladder with calcific lithiasis, circumferential mural thickening (*) from detrusor hypertrophy, and urothelial hyperenhancement (thin arrow in b) consistent with active UTI. The current urgent CT (ce) requested to investigate urosepsis showed increased mural thickening of the urinary bladder (*), with persistent urothelial enhancement (thin arrows in d), the appearance of inflammatory stranding of the perivesical fat planes (+), and the development of a sizeable (7.5×6×5.5 cm) collection attached to the bladder dome (arrowheads), with non-enhancing hypoattenuating (10–15 Hounsfield units, HU) content and enhancing peripheral rim. Cystoscopy confirmed severely inflamed bladder mucosa. Postoperative CT after surgical abscess drainage depicted normalised bladder wall (thin arrows in e) and appearance of ascites (*) [Partially reproduced from Open Access Ref. [27]]

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