Exam 7 L. 14 Flashcards Preview

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Flashcards in Exam 7 L. 14 Deck (10):
1

Nasal tumors

1)**most are malignant**
2) uncommon
3) should be on DDX list for nasal discharge in older dogs and cats
4) dog average age is about 10 years
5) Dolichocephalic breeds predisposed 2-3x increased if they live in a smoking household
6) risk increases 2-4x with use of kerosene/coal heaters indoors

NOTE: urban lifestyle, kerosene/coal burning heaters, secondhand smoke: increase the risk for nasal tumors for dogs and cats!

2

Most common nasal tumors

Carcinomas (70%) >fibrosarcoma >chondrosarcoma >osteosarcoma

3

Nasal tumor clinical presentation

1) intermittent, progressive, chronic nasal discharge
2) epistaxis, mucopurulent
3) unilateral >bilateral
4) CNS signs (if nasal tumor is near cribiform plate, will have seizures and no epistaxis)
5) nasal cavity obstruction, Stertor
6) facial deformity, dyspnea
7) cough

4

Nasal tumor possible differential list

Differentials: tooth root abscess, inflammatory polyp, fungal/bacterial infection, lymphoplasmacytic rhinitis, coagulopathies

5

Diagnosis

1) physical exam and good oral exam
2) check airway patency
3) pre-biopsy coagulation tests
4) evaluation of nasal exudate is valuable
5)*rhinoscopy with biopsy*
6) advanced imaging is more accurate than just radiographs

6

Radiographic signs of nasal tumor

Most common sign is loss of turbinate detail (this can also be caused by fungal infection)

7

Remember

Cribiform plate is close to the level of the medial canthus of the eye

8

Hydropopulsion

Forceful nasal flushing ==> increases breathing ease and is a palliative procedure

9

Prognosis

1) surgery alone: outcome similar to no therapy/may make it worse
2) *radiation therapy*: 20 months

10

Feline nasal tumor

1) lymphoma >carcinoma
2) radiation therapy 1st choice for cats
-lymphoma: RT plus CHOP therapy: MST 2-3 years