PMC7483825_01
Computed tomography:coronal (A) and axial (B) planes demonstrating bilateral hydroureteronephrosis and a bladder mass at the base measuring 13 mm.
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A non-contrast computed tomography (CT) abdomen showed severe bilateral hydroureteronephrosis and marked thickening of the bladder base involving both vesico-ureteric junctions, suggestive of transitional cell carcinoma (Fig. 1).
Right retrograde pyelogram revealing multifocal filling defects within the right ureter (A) and right sided hydronephrosis with ureteric stent in situ (B).
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Retrograde pyelograms showed tortuous ureters with bilateral hydronephrosis and multiple filling defects (Fig. 2).
Low (A) and high powered (B) von Kossa calcium stains of the bladder biopsy revealing a mixed inflammatory infiltrate and the presence of von Hansemann histiocytes (blue and yellow arrows) with Michaelis-Gutmann bodies (green arrow).
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The findings were consistent with malakoplakia (Fig. 3).