Misc Canine and Feline Oncology

Question 1

Epithelial tumor of older cats that occurs on the head, neck, and shoulders and is benign 90% of the time

Answer 1

Basal cell tumor

Question 2

When should a basal cell tumor be removed?

Answer 2

When it ulcerates or grows

Question 3

What is the most common skin tumor in cats?

Answer 3

Basal cell tumor

Question 4

What are clinical signs of feline traumatic sarcoma?

Answer 4

Phthisis bulbi, corneal edema, blindness

Question 5

If a cat’s eye has a history of trauma and is now blind, what should you suspect?

Answer 5

Feline traumatic sarcoma

Question 6

Is a feline traumatic sarcoma malignant or benign?

Answer 6

Very malignant

Question 7

How do you treat a feline traumatic sarcoma?

Answer 7

Enucleation

Question 8

Schistocytes are common with which type of cancer?

Answer 8

Hemangiosarcoma

Question 9

Fragmented RBCs broken up d/t irregular vessels and fibrin strands as they pass through tumors

Answer 9

Schistocytes

Question 10

Which dog breed is most commonly affected by hemangiosarcoma?

Answer 10

GSD

Question 11

What is the most common malignant tumor of the spleen in dogs?

Answer 11

Hemangiosarcoma

Question 12

What does a cardiac HSA cause?

Answer 12

Cardiac tamponade (excessive fluid accumulation in pericardium)

Question 13

Where on a heart is HSA most commonly found?

Answer 13

R atrium (auricle)

Question 14

How do you ddx lymphoma from leukemia?

Answer 14

Bone marrow is affected with leukemia

Question 15

Which dog breed is predisposed to histiocytic neoplasia (round cell tumors)?

Answer 15

Bernese mountain dogs

Question 16

Why should you NOT use morphine to treat a MCT?

Answer 16

Causes significant histamine release

Question 17

Which tyrosine kinase inhibitor is FDA approved for MCTs?

Answer 17

Palladia

Question 18

What benign tumors usually develop in dogs less than 3yo and usually ulcerate and regress on their own?

Answer 18

Cutaneous histiocytoma

Question 19

How do you treat TVT?

Answer 19

Vincristine

Question 20

How many chromosomes does a TVT have?

Answer 20

59 in the tumor (contrast to 78 in a dog)

Question 21

Which tumors are common in cryptorchid testes?

Answer 21

Sertoli cell tumors

Question 22

What do sertoli cell tumors secrete?

Answer 22

Estrogen

Question 23

What tumors cause male feminizing syndrome?

Answer 23

Sertoli cell tumors

Question 24

What are clinical signs of a sertoli cell tumor?

Answer 24

Gynecomastia, bilaterally symmetric alopecia, aplastic anemia

Question 25

Which scrotal testicular tumor is usually hormonally silent?

Answer 25

Interstitial cell tumor

Question 26

What do seminomas secrete?

Answer 26

Androgens and estrogens

Question 27

In which dogs is apocrine gland anal sac carcinoma most common?

Answer 27

Spayed females

Question 28

What causes most clinical signs seen with AGASAC?

Answer 28

Distant mets or hypercalcemia

Question 29

If you find a sublumbar mass and bony lysis of L6, what tumor should you suspect?

Answer 29

Prostatic neoplasia

Question 30

Does castration decrease risk of prostatic neoplasia?

Answer 30

No (only of prostatitis)

Question 31

Where does a transitional cell carcinoma occur?

Answer 31

Trigone of the bladder

Question 32

How do you treat a transitional cell carcinoma?

Answer 32

Platinum therapy and piroxicam

Question 33

How do you treat a primary lung tumor?

Answer 33

Lobectomy w/wide margins

Question 34

What is the prognosis for a primary lung tumor?

Answer 34

Guarded long-term

Question 35

Do cats or dogs have a better prognosis for OSA?

Answer 35

Cats

Question 36

Why do cats have a better prognosis for OSA than dogs?

Answer 36

Much lower rate of mets