Urine cytology specimen demonstrating the findings associated with polyomavirus-associated nephropathy

(A) Urine cytology specimen depicting scattered "decoy cells" with ground-glass, homogeneous nuclear inclusions (Papanicolaou, ×1000).
(B) Urine cytology specimen depicting vesicular variant decoy cells with enlarged nuclei with clumped, irregular chromatin (Papanicolaou, ×1000).
(C) Urine cytology specimen with tubular casts containing numerous compacted
decoy cells indicative of polyomavirus-associated nephropathy (Papanicolaou, ×400).