Fig. 1.

Active infectious cystitis in a 52-year-old woman with poorly controlled diabetes, dehydration, pelvic and flank pain, pyuria and elevated C-reactive protein (CRP). Unenhanced (a) and contrast-enhanced (b–d) multidetector CT images showed contracted urinary bladder with catheter (thick arrows), and marked circumferential mural thickening (*) with hypoenhancing oedematous wall and urothelial hyperenhancement (thin arrows). Urine cultures revealed polymicrobial infection including Staphylococcus aureus and multiresistant extended-spectrum beta-lactamase (ESBL)-positive Escherichia coli