Report of a workshop on urothelial lesions in mice

Thirteen pathologists with a variety of backgrounds met at the National Center for Toxicological Research in Jefferson, Arkansas, to discuss and exchange views on urothelial lesions in mice. Fifteen slides of urothelial lesions from mice were distributed to the participants prior to the meeting. A consensus was reached on 11 of the lesions, 8 of which were neoplastic and 3 of which were non-neoplastic. The author encourages such workshops and feels that they are meaningful and beneficial in understanding the significance of such lesions.