Oral Tumors Flashcards
what does acanthomatous ameloblastoma arise from?
periodontal ligament
what is prognosis of oral neoplasia dependent on?
highly dependent on histopathologic diagnosis
what percentage of all oral tumors are oral malignant melanoma?
30-40%
what does prognosis of oral malignant melanoma depend on?
tumor size and grade
should you aspirate lymph nodes for oral malignant melanoma if they are small?
yes- both sides
nodal involvement carries a poorer prognosis
what is surgery like of resectable oral malignant melanoma?
surgical excision with bone
follow up with radiation if margins incomplete
lymph node removal recommended
does chemotherapy help with oral malignant melanoma?
no
who does canine oral fibrosarcoma occur in?
medium to large breed dogs
what is the treatment of choice for canine oral fibrosarcoma?
surgical excision with removal of bone
what is high/low fibrosarcoma?
histologically low grade
biologically high grade
when are canine oral squamous cell carcinomas more aggressive?
sublingual or tonsillar
what is the most common canine lingual tumor?
squamous cell carcinoma
how much of the rostral tongue of a dog can you remove?
40-60%
where can feline oral squamous cell carcinoma affect?
any area of oral cavity
what is recommended for treatment of feline oral squamous cell carcinoma?
palliative care
what are the malignant canine oral tumors?
melanoma
squamous cell carcinoma
fibrosarcoma
what is acanthomatous ameloblastoma like?
locally aggressive but does not spread
radiation sensitive
what seems to increase risk of oral malignant melanoma?
heavily pigmented oral cavity
what is treatment of oral malignant melanoma like?
for both primary tumor and metastatic disease
mitotic count ________ have a better prognosis with oral malignant melanoma
<9
what is essential for radiation for oral malignant melanoma?
CT
what is radiation like with non-resectable oral malignant melanoma?
include lymph nodes
radiation response can be dramatic
what can a melanoma vaccine do?
potentially slow the development of metastases in dogs with minimal residual disease
what is survival of canine oral fibrosarcoma?
250-750 days
metastases develop late- 10-15% of dogs
what is the prognosis of high/low fibrosarcoma?
very poor unless surgically resectable
chemotherapy of no benefit
what is the prognosis of canine lingual tumors?
guarded
are most feline oral tumors benign or malignant?
malignant
5% benign
what is feline oral squamous cell carcinoma often mistaken for?
dental disease/abscess
