PMC6151332_01
CT urogram showing filling defect in the left lower pole calix.
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Filling defect in the left lower pole calix in retrograde pyelography.
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The retrograde pyelogram showed the previously described contrast-filling defect in the caudal calix of the left kidney (Fig. 2).
Hypertrophied papilla of the left lower pole calix.
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However, in two calices of lower pole, nodular calcified papillary structures were found (Fig. 3), which were both biopsied endoscopically and a 7F Double-J stent was placed again.