Alimentary System

Oral Mucosa - Cyst, Squamous

    Narrative
    Oral mucosa - Cyst, Squamous in a female F344/N rat from a chronic study. There is a keratin-filled squamous cyst (arrow) beneath the mucosa in the hard palate.
    Oral mucosa - Cyst, Squamous in a female F344/N rat from a chronic study. There is a keratin-filled squamous cyst (arrow) beneath the mucosa in the hard palate.
    Oral mucosa - Cyst, Squamous in a female F344/N rat from a chronic study (higher magnification of Figure 1). There is a keratin-filled squamous cyst (arrow) beneath the mucosa in the hard palate.
    Oral mucosa - Cyst, Squamous in a female F344/N rat from a chronic study (higher magnification of Figure 1). There is a keratin-filled squamous cyst (arrow) beneath the mucosa in the hard palate.
    Oral mucosa - Cyst, Squamous in a female F344/N rat from a chronic study (higher magnification of Figure 1). The wall of the keratin cyst is composed of normal squamous epithelium.
    Oral mucosa - Cyst, Squamous in a female F344/N rat from a chronic study (higher magnification of Figure 1). The wall of the keratin cyst is composed of normal squamous epithelium.

    Authors:

    Linda H. Kooistra, DVM, PhD, DACVP
    Pathologist
    Charles River 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

    Reviewers:

    Joel R. Leininger, DVM, PhD
    Senior Pathologist
    MedImmune
    Washington, DC

    Amy Brix, DVM, PhD, DACVP
    Senior Pathologist
    Experimental Pathology Laboratories, Inc.
    Research Triangle Park, NC