Special Senses System

Ear - Ulcer

    Narrative
    Ear - Ulcer in a male Swiss CD-1 mouse from a chronic study. An ulcer of the external ear canal epithelium; necrotic debris and neutrophils cover much of the ulcer (arrow).
    Ear - Ulcer in a male Swiss CD-1 mouse from a chronic study. An ulcer of the external ear canal epithelium; necrotic debris and neutrophils cover much of the ulcer (arrow).
    Ear - Ulcer in a male Swiss CD-1 mouse from a chronic study (higher magnification of Figure 1). There is an ulcer (arrow) of the external ear canal epithelium.
    Ear - Ulcer in a male Swiss CD-1 mouse from a chronic study (higher magnification of Figure 1). There is an ulcer (arrow) of the external ear canal epithelium.
    Ear - Ulcer in a male Swiss CD-1 mouse from a chronic study (higher magnification of Figure 1). There is an ulcer (arrow) of the external ear canal epithelium; the adjacent epithelium is hyperplastic.
    Ear - Ulcer in a male Swiss CD-1 mouse from a chronic study (higher magnification of Figure 1). There is an ulcer (arrow) of the external ear canal epithelium; the adjacent epithelium is hyperplastic.

    Author

    Margarita M. Gruebbel, DVM, PhD, DACVP
    Senior Pathologist
    Experimental Pathology Laboratories, Inc.
    Research Triangle Park, NC

    Reviewers

    Ruth E. Hurley, DVM, PHD, DACVP
    Senior Veterinary Pathologist
    Huntingdon Life Sciences
    North Brunswick, NJ

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