Respiratory System

Nose - Polyp, Inflammatory

    Narrative
    Nose - Polyp, Inflammatory in a male B6C3F1/N mouse from a chronic study. The attachment of the epithelial-lined, proliferative, connective tissue polyp (arrow) to the mucosa is not present in this section.
    Nose - Polyp, Inflammatory in a male B6C3F1/N mouse from a chronic study. The attachment of the epithelial-lined, proliferative, connective tissue polyp (arrow) to the mucosa is not present in this section.
    Nose - Polyp, Inflammatory in a male B6C3F1/N mouse from a chronic study. A large irregularly shaped mass of connective tissue lined by epithelium (arrow) occupies a large portion of the nasal cavity, and the adjacent nasal lumen is filled with proteinaceous fluid.
    Nose - Polyp, Inflammatory in a male B6C3F1/N mouse from a chronic study. A large irregularly shaped mass of connective tissue lined by epithelium (arrow) occupies a large portion of the nasal cavity, and the adjacent nasal lumen is filled with proteinaceous fluid.

    Authors

    Rodney A. Miller, DVM, PhD, DACVP
    NC Pathology Group Manager
    Senior Pathologist
    Experimental Pathology Laboratories, Inc.
    Research Triangle Park, NC

    Mark F. Cesta, DVM, PhD, DACVP
    Staff Scientist, NTP Pathologist
    Cellular and Molecular Pathology Branch
    Division of the National Toxicology Program
    National Institute of Environmental Health Sciences
    Research Triangle Park, NC

    Reviewers

    Robert R. Maronpot, DVM, MS, MPH, DACVP, DABT, FIATP
    Senior Pathologist
    Experimental Pathology Laboratories, Inc.
    Research Triangle Park, NC

    Ronald Herbert, DVM, PhD
    NTP Pathologist
    Group Leader, Pathology Support Group
    Division of the National Toxicology Program
    National Institute of Environmental Health Sciences
    Research Triangle Park, NC