Misc Canine and Feline Oncology Flashcards
Epithelial tumor of older cats that occurs on the head, neck, and shoulders and is benign 90% of the time
Basal cell tumor
When should a basal cell tumor be removed?
When it ulcerates or grows
What is the most common skin tumor in cats?
Basal cell tumor
What are clinical signs of feline traumatic sarcoma?
Phthisis bulbi, corneal edema, blindness
If a cat’s eye has a history of trauma and is now blind, what should you suspect?
Feline traumatic sarcoma
Is a feline traumatic sarcoma malignant or benign?
Very malignant
How do you treat a feline traumatic sarcoma?
Enucleation
Schistocytes are common with which type of cancer?
Hemangiosarcoma
Fragmented RBCs broken up d/t irregular vessels and fibrin strands as they pass through tumors
Schistocytes
Which dog breed is most commonly affected by hemangiosarcoma?
GSD
What is the most common malignant tumor of the spleen in dogs?
Hemangiosarcoma
What does a cardiac HSA cause?
Cardiac tamponade (excessive fluid accumulation in pericardium)
Where on a heart is HSA most commonly found?
R atrium (auricle)
How do you ddx lymphoma from leukemia?
Bone marrow is affected with leukemia
Which dog breed is predisposed to histiocytic neoplasia (round cell tumors)?
Bernese mountain dogs
Why should you NOT use morphine to treat a MCT?
Causes significant histamine release
Which tyrosine kinase inhibitor is FDA approved for MCTs?
Palladia
What benign tumors usually develop in dogs less than 3yo and usually ulcerate and regress on their own?
Cutaneous histiocytoma
How do you treat TVT?
Vincristine
How many chromosomes does a TVT have?
59 in the tumor (contrast to 78 in a dog)
Which tumors are common in cryptorchid testes?
Sertoli cell tumors
What do sertoli cell tumors secrete?
Estrogen
What tumors cause male feminizing syndrome?
Sertoli cell tumors
What are clinical signs of a sertoli cell tumor?
Gynecomastia, bilaterally symmetric alopecia, aplastic anemia
Which scrotal testicular tumor is usually hormonally silent?
Interstitial cell tumor
What do seminomas secrete?
Androgens and estrogens
In which dogs is apocrine gland anal sac carcinoma most common?
Spayed females
What causes most clinical signs seen with AGASAC?
Distant mets or hypercalcemia
If you find a sublumbar mass and bony lysis of L6, what tumor should you suspect?
Prostatic neoplasia
Does castration decrease risk of prostatic neoplasia?
No (only of prostatitis)
Where does a transitional cell carcinoma occur?
Trigone of the bladder
How do you treat a transitional cell carcinoma?
Platinum therapy and piroxicam
How do you treat a primary lung tumor?
Lobectomy w/wide margins
What is the prognosis for a primary lung tumor?
Guarded long-term
Do cats or dogs have a better prognosis for OSA?
Cats
Why do cats have a better prognosis for OSA than dogs?
Much lower rate of mets
