PMC3090674_01
Abdominal computerized tomography performed after urinary diversion by ureteral stent. The figure shows a right iliac ureteral mass (white arrow) below the right iliac artery cross.
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It showed a periureteral infiltration involving iliac vessels (Figure 1).
Positron emission tomodensitometry (PET) scan. A high fixation level on the right ureter and in the ENT area can be observed.
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High fixation levels were found in the right ureter, ENT area, left lung, L4-L5 vertebra and spleen (Figure 2), which caused us to suspect lymphoma.
Pathological findings of the resected right ureter (Hematoxylin-eosin stain, x20) As can be seen, two vessels (A) have thick fibrinoid deposits within their walls (B), sign of necrotic vasculitis. In the periphery, a dense polymorphous inflammatory infiltrate with polynuclear eosinophils (C) can be observed as well as granulomas.
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The final pathological examination of the resected ureter was concluded with the absence of neoplastic cells but brought to light a vasculitis aspect and necrosis (Figure 3).