Fig. 9
A 38-year-old female with intermittent fever and elevated C-reactive protein 2 weeks after PCNL treatment for right-sided nephrolithiasis. Contrast-enhanced MDCT with the ureteral stent in place showed absent hydronephrosis, mild enhancing ureteral thickening (thin arrows in A, B) indicating infectious pyeloureteritis and a 3-cm hypoattenuating lesion with peripheral delayed enhancement (arrowheads in B and C) at the lower renal pole consistent with an abscess. The patient recovered after intensive antibiotic treatment. During follow-up, distal stent migration was detected radiographically (D)