1. K-State home
  2. »College of Veterinary Medicine
  3. »Kansas State Veterinary Diagnostic Laboratory
  4. »Resources
  5. »Newsletters and News
  6. »Diagnostic Insights
  7. »March 2018
  8. »Cutaneous Squamous Cell Carcinoma in Cats: Associated Factors

Kansas State Veterinary Diagnostic Laboratory

Kansas State Veterinary Diagnostic Laboratory
Kansas State University
1800 Denison Avenue
Manhattan, KS 66506
Get Directions

KSVDL Client Care
General Inquiries
785-532-5650 or
866-512-5650
Fax: 785-532-4835
clientcare@vet.k-state.edu

KSVDL Business Office
Billing Inquiries
785-532-3294 or
866-884-3867
Fax: 785-532-3502
vdlbusiness@vet.k-state.edu

Regular business hours:
8 am - 5 pm Mon.-Fri.
8 am - noon Sat.

banner

March 2018

Cutaneous Squamous Cell Carcinoma in Cats: Associated Factors

By Dr. Charan Ganta

Squamous Cell Carcinoma in Cats

Cutaneous squamous cell carcinoma (SCC) in cats is one of the most common malignant skin tumors with an incidence rate of 15 to 48%. The wide range in incidence is due to marked variability in reported geographical distribution in these cats. Lesions often present on the nasal planum, eyelids and ear tips, which are areas with minimal hair (Figure 1). There is no breed predilection, but often short-haired cats and those 5 years and above are more prone. It has been shown that white and piebald ventral coat color cats have the highest incidence of SCC, with white cats being 13 times more prone to invasive cutaneous SCC.

Figure 1.
Associated Factors in Pathogenesis

It is well documented in both humans and cats that in the majority of cases (80% in cats) UV light plays an important role in the pathogenesis of cutaneous SCC. A mutation in the p53 tumor suppressor gene was demonstrated in about 53% of cutaneous SCCs in cats. In addition, feline papillomavirus 2 was detected in 80% of the SCCs in cats, suggesting a possible associated role of feline papillomavirus in causing SCC (Figure 2).  

Figure 2.
Biopsy and Histopathology

A definitive diagnosis of squamous cell carcinoma can only be achieved through a surgical biopsy of the skin lesion. Characteristic proliferation and invasion of dysplastic squamous epithelial cells into the dermis is diagnostic. An association of papillomavirus with the neoplasm can be detected by immunohistochemistry (Figure 3) or PCR.

Figure 3.
Prognosis

Squamous cell carcinoma is often a locally infiltrative neoplasm that rarely undergoes metastasis, hence a complete surgical excision of the neoplasm with clean surgical margins of 0.5 to 1 cm offers a good prognosis. Limiting exposure to UV light will significantly decrease the incidence.

For questions on various available treatment options, please call KSVDL to setup a consult with one of the oncologists at the Veterinary Health Center, KSUCVM. Phone: 785-532-5650 or email: clientcare@vet.k-state.edu

For any additional questions and references related to this report, phone: 785-532-5650 or email: clientcare@vet.k-state.edu

Recent EIA Incident in Kansas
Return to Index