PMC3914127_01
(a) Abdominal echography, showing right-sided unilateral hydronephrosis. (b) Abdominal computed tomography with contrast, showing an enhanced mass in the right renal pelvis (arrow) in association with pelvic dilatation and slight thinning of renal cortex.
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Abdominal echography showed right-sided unilateral hydronephrosis (Figure 1(a)), and abdominal computed tomography with contrast media pointed out a mass in the right renal pelvis in association with pelvic dilatation and slight thinning of renal cortex (Figure 1(b)), strongly suggesting cancer of renal pelvis.
Crosssection photograph of the removed right kidney specimen, showing a tumor of 9 x 6 cm in size in renal pelvis.
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The right kidney was totally nephroureterectomized (Figure 2) on 29th February, 2008.
(a) Light microscopic photography, showing slightly ischemic change of glomerulus, tubular atrophy, mononuclear cell infiltration, and interstitial fibrosis (mathon-trichrome staining, x200). (b) Electron micrograph of glomerulus, showing almost intact morphology without electron dense deposit. C: capillary lumen, M: mesangium.
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Renal histological examination revealed slightly ischemic change of glomeruli without apparent glomerulopathy in association with tubular atrophy and interstitial fibrosis with mildly-to-moderately mononuclear cell infiltration in 60% of cortical areas (Figure 3(a)). Immunofluorescence study showed no deposition of immunoreactanct in the renal tissue and electron microscopy showed almost intact glomerulus without electron dense deposits (Figure 3(b)).
Clinical course of the patient.
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