case_images: PMC10853830_01
case_images: Computerized tomography scan images (A: axial view; B: coronal view) showing right-sided double J stent (white arrow) in situ and bilateral perinephric fat stranding
case_images: cureus-0016-00000052000-i01.jpg
case_images: PMC10853830_01_cureus-0016-00000052000-i01.jpg
case_images: FIG1
case_images: The computerized tomography (CT) scan (Figure 1) revealed a right kidney of size 6.6x4.1x8.5cm with DJ stent in situ.
case_images: Kidney histopathology (A) Low magnification: unremarkable appearing glomerulus and dense interstitial inflammation in background. (B) Light microscopy: focal dense chronic interstitial inflammation composed of many plasma cells, lymphocytes, histiocytes, and scattered eosinophils. (C & D) Immunohistochemistry: interstitial inflammatory infiltrate composed of >10 IgG4 positive plasma cells/hpf
case_images: cureus-0016-00000052000-i02.jpg
case_images: PMC10853830_01_cureus-0016-00000052000-i02.jpg
case_images: FIG2
case_images: Kidney biopsy was done in view of the rapid worsening of renal function (Figure 2).
case_images: Patient timeline depicting the chronology of events. DJ: Double J; FDG: fluorodeoxyglucose, PET: positron emission tomography
case_images: cureus-0016-00000052000-i03.jpg
case_images: PMC10853830_01_cureus-0016-00000052000-i03.jpg
case_images: FIG3
case_images: The patient timeline is depicted in Figure 3.