Hemangiosarcoma

Question 1

What is the main form in which a hemangiosarcoma presents in a dog?

Answer 1

Splenic tumor

Question 2

What is the median age of dogs affected with hemangiosarcoma?

Answer 2

9-10.5yo

Question 3

Which breeds are most commonly affected with hemangiosarcomas?

Answer 3

GR, Lab, Schnauzer, GSD

Question 4

What are clinical signs of hemangiosarcomas?

Answer 4

Acute collapse to incidental finding

Question 5

How do you treat a hemangiosarcoma?

Answer 5

Splenectomy

Question 6

What is the MST for a hemangiosarcoma treated with splenectomy alone?

Answer 6

3mo

Question 7

What is the MST for a hemangiosarcoma treated with splenectomy and chemo?

Answer 7

9-12mo

Question 8

What is a hemangiosarcoma?

Answer 8

Malignancy of endothelial cells that line the blood vessels

Question 9

What induces cutaneous hemangiosarcomas?

Answer 9

UV radiation from the sun

Question 10

Which dog breeds are most commonly affected by splenic hemangiosarcomas?

Answer 10

Large breeds like GSD, GR, labs

Question 11

What region of the heart is most commonly affected by a hemangiosarcoma?

Answer 11

R atrium (auricle)

Question 12

What is the most common tumor to met to the brain?

Answer 12

Hemangiosarcoma

Question 13

Why might a hemangiosarcoma present for emergency?

Answer 13

Ruptured splenic mass (hemoabdomen, shock, pericardial effusion)

Question 14

What is the MST of a hemangiosarcoma regardless of treatment?

Answer 14

12mo

Question 15

How does an HSA appear on ultrasound?

Answer 15

Cavitary and fluid-filled

Question 16

How exfoliative is an HSA?

Answer 16

Poorly exfoliative

Question 17

What is the risk of an HSA incisional biopsy?

Answer 17

Hemorrhage

Question 18

What cell changes can be seen on bloodwork of an HSA?

Answer 18

Schistocytes

Question 19

What chemo agents can help delay development of HSA mets and prolong survival?

Answer 19

Doxorubicin (adriamycin-based chemo)

Question 20

Single lesion w/o hemorrhage

Answer 20

Stage 1

Question 21

Single lesion w/hemorrhage

Answer 21

Stage 2

Question 22

HSA w/metastasis

Answer 22

Stage 3

Question 23

Which dog breeds are at increased risk of developing a cutaneous HSA?

Answer 23

Unpigmented skin and white, thin, or short hair coats

Question 24

Which regions of the body are most often affected by cutaneous HSA?

Answer 24

Ventral abdomen and medial thighs