The nested variant of transitional cell carcinoma of the urinary bladder.

@article{Paik1996TheNV,
  title={The nested variant of transitional cell carcinoma of the urinary bladder.},
  author={Seung Sam Paik and Min Kyung Park},
  journal={British journal of urology},
  year={1996},
  volume={78 5},
  pages={793-4}
}