Urinary System

Urinary Bladder - Ulcer

    A focal ulcer of the urothelium, with inflammation of the underlying submucosa and muscularis layers, from a male B6C3F1 mouse in a chronic study.
    A focal ulcer with extensive necrosis and acute inflammation from a male F344/N rat in a chronic study.


    John Curtis Seely, DVM, DACVP
    Senior Pathologist
    Experimental Pathology Laboratories, Inc.
    Research Triangle Park, NC

    Abraham Nyska,  DVM, Diplomate ECVP, Fellow IATP
    Expert in Toxicologic Pathology
    Visiting Full Professor of Pathology
    Sackler School of Medicine, Tel Aviv University
    Timrat Israel


    Samuel M Cohen, PHD, MD
    Havlik-Wall Professor of Oncology
    Director of Pathology Residency Program
    Nebraska Medical Center
    Omaha, NE

    David E. Malarkey DVM, PhD, DACVP, FIATP
    Head, National Toxicology Program Pathology Group
    Cellular and Molecular Pathology Branch
    Division of the National Toxicology Program
    National Institute of Environmental Health Sciences
    Research Triangle Park, NC