Oral tumors

From Dog
Ameloblastoma in a Shih Tzu, successfully removed surgically[1]
Erythema multiforme secondary to epitheliotropic T-cell lymphoma in a Maltese[2]

Below are listed some of the more common oral tumors in dogs which result in dental disease, in order of frequency.

- Alveolar rhabdomyosarcoma - inner mouth, aligned with molars[9]
- Odontogenic myxoma[10]
  • Lingual
- osteoma - usually involves maxillary or mandibular bone with hard swellings of the tongue, jaw or face[11]
- liposarcoma[12] - usually firm oval mass
- arteriovenous hemangioma[13]
- Angiolipoma[14]

These tumors should be distinguished from non-neoplastic swellings such as sialocoeles and carnassial tooth root abscess.


  1. Toa Payoh Vets
  2. Wikipedia
  3. Baines SJ et al (2013) Oral non-tonsillar squamous cell carcinoma in young dogs. Vet Rec 172(2):52-53
  4. Boehm B et al (2011) Odontogenic tumours in the dog and cat. Tierarztl Prax Ausg K Kleintiere Heimtiere 39(5):305-312
  5. Brockley LK et al (2013) Malignant melanoma in 63 dogs (2001-2011): the effect of carboplatin chemotherapy on survival. N Z Vet J 61(1):25-31
  6. Frazier SA et al (2012) Outcome in dogs with surgically resected oral fibrosarcoma (1997-2008). Vet Comp Oncol 10(1):33-43
  7. Smithson CW et al (2012) Multicentric oral plasmacytoma in 3 dogs. J Vet Dent 29(2):96-110
  8. Nemec A et al (2012) Erythema multiforme and epitheliotropic T-cell lymphoma in the oral cavity of dogs: 1989 to 2009. J Small Anim Pract 53(8):445-452
  9. Snyder LA & Michael H (2011) Alveolar rhabdomyosarcoma in a juvenile labrador retriever: case report and literature review. J Am Anim Hosp Assoc 47(6):443-446
  10. Barigye R et al (2011) Odontogenic myxoma in an 8-year-old Labrador Retriever dog. J Vet Diagn Invest 23(1):167-171
  11. Fernandez M et al (2012) Lingual osteoma in a dog. J Small Anim Pract 53(8):480-482
  12. Piseddu E et al (2011) Cytologic, histologic, and immunohistochemical features of lingual liposarcoma in a dog. Vet Clin Pathol 40(3):393-397
  13. Schöniger S et al (2008) Arteriovenous haemangioma in two dogs and a cat. J Comp Pathol 139(2-3):130-136
  14. Kitshoff AM et al (2010) Infiltrative angiolipoma of the parotid salivary gland in a dog. J S Afr Vet Assoc 81(4):258-261