Lecture 21: Hemagiosarcoma

Question 1

What is the Primary location for hemangiosarcoma?

Answer 1

Spleen, right atrium, liver, skin, subcutis

Question 2

HSA has rapid and widespread metastasis to:

Answer 2

liver
mesentery
lungs

Question 3

Diagnosis of CBC:

Answer 3

• Anemia
• Mild to moderate thrombocytopenia
• May see schistocytes and/or acanthocytes

Question 4

(T/F) Splenic masses should be removed and submitted for histopathology for definitive diagnosis

Answer 4

True

Question 5

What is the *primary treatment( for most cases of HSA?

Answer 5

Surgery
- Make sure to correct hemodynamic abnormalities prior to surgery

Question 6

What can 25% of dogs undergoing splenectomy for splenic masses develop?

Answer 6

Arrhythmias
- usually resolve within 24-48 hours

Question 7

What type of hemangiosarcoma is an exception to adjuvant chemotherapy?

Answer 7

Dermal

Question 8

What Dermal HSA patients do we stage?

Answer 8

• Non-predisposed breeds
• Invasive tumors

Question 9

Ventral area is a good prognosis for

Answer 9

dermal HSA

Question 10

Surgical excision + chemotherapy for HSA with:

Answer 10

Hypodermal extension

Question 11

Be suspicious of HSA in any bloody mass that does
not ____________ well

Answer 11

exfoliate

Question 12

Primary Bone HSA

Answer 12

• Staging - include abdominal ultrasound if HSA suspected or confirmed on histo
  - +/- bone scan, full body CT if concern for metastatic lesion
  - Immunohistochemistry may be required to distinguish from telangiectatic osteosarcoma