RODENT ULCER
(Eosinophilic Granuloma)
General Information:
Rodent ulcers usually first appear as a small, open
sore on the upper lip, just below the nose. The center of the
sore has an ulcerated ("scooped out") appearance. If
untreated, the sore usually increases in size and depth. In severe
cases, the sore may involve the entire upper lip and extend into
the mouth. Rodent ulcers occasionally appear in other areas, such
as on the back legs.
These sores are not usually painful and generally
occur in female cats averaging 5-6 years of age. Their cause is
unknown, but constant licking of the ulcers probably enlarges
them. These ulcers occasionally become cancerous (squamous cell
carcinoma).
Treatment Information:
- Most rodent ulcers respond well to treatment
with anti-inflammatory drugs.
- Two to three injections of Depo Medrol two weeks
apart are usually required.
- Frequency and length of treatment depend on the
severity of the condition.
- Ulcers that do not heal fully with drug therapy
may require surgical removal.
We hope that you will find this information helpful in your quest
for better pet care. If you have any questions or comments, please call your
veterinarian's office, or feel free to
e-mail us.
David E. Hammett, DVM
and the Staff of All Creatures Veterinary Clinic, PC
