- Oral neoplasms comprise 10% of feline neoplasms.
- 60-70% of feline oral tumors are squamous cell carcinomas.
- 10% of feline oral squamous cell carcinomas arise in the tonsil.
- Typically unilateral.
- More aggressive biological behavior than other oral squamous cell carcinomas.
- Signs: Hypersalivation, difficulty in swallowing or eating.
- Diagnosis: signs, biopsy.
- Prognosis: poor - an aggressive neoplasm with much higher rate of regional lymph node and distant metastasis than other oral squamous cell carcinomas
- Frequent regional lymph node enlargement.
- Traumatic or other stomatitis .
- Other tonsillar neoplasms (e.g. lymphosarcoma).
- Tonsillar cyst (rare).
- Other causes of hypersalivation (toxicosis, periodontal disease, calicivirus, chronic stomatitis, gingivitis etc.)
- Poor prognosis due to early metastasis.
Reasons for treatment failure
- Rapid progression of tumor.