02 - sarcomas and mast cell tumors Flashcards Preview

00-01-21: oncology > 02 - sarcomas and mast cell tumors > Flashcards

Flashcards in 02 - sarcomas and mast cell tumors Deck (18)
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1
Q
A
2
Q

(soft tissue sarcomas)

(biologic behavior)

  1. usually invasive and infiltrative with poorly defined margins
  2. metastasis depends on the grade of the tumor
A
3
Q

(soft tissue sarcomas)

(liposarcoma)

  1. originate from adipocytes
  2. rare
  3. invasive and agressive?
  4. how common is mets?
A
  1. yes
  2. rare
4
Q

(soft tissue sarcomas)

A
5
Q

(soft tissue sarcomas)

(fibrosarcoma)

  1. common
  2. invasive but slow grwoing
  3. how common is mets?
A
  1. rare
6
Q

(soft tissue sarcomas)

(hemangiosarcoma)

  1. originates from what?
  2. rapid growing and invasive?
  3. usually in what organs?
  4. how common is mets?
  5. may cause collapse if what occurs?
A
  1. endothelium of blood vessels
  2. yes
  3. spleen, heart, and skin
  4. common
  5. tumor ruptures with hemorrhage
7
Q

(soft tissue sarcomas)

(neurofibrosarcoma)

  1. originates from what?
  2. slow-growing but invasive, how common is mets?
  3. commonly occurs where?
A
  1. nerve sheaths
  2. rare
  3. brachial or lumbosacral plexus
8
Q

(soft tissue sarcomas)

  1. what is the treatment of choice?
A
9
Q

(soft tissue sarcomas)

  1. what is the treatment of choice?
  2. when is radiation tx used?
  3. chemo is best used when?
A
  1. surgical excision (with wide margins)
  2. when the tumor cannot be completely excised
  3. after incomplete excision
10
Q

(mast cell tumors)

  1. high risk breeds?
A
  1. boxers, boston terriers, english bulldogs, english bull terriers, shar peis, labs, goldens
11
Q

(mast cells)

A
12
Q

(mast cells)

A
13
Q

(mast cells)

A
14
Q

(mast cells)

  1. what is the treatment of choice?
  2. give what before sx?
A
  1. surgical excision with wide margins
  2. anti-histamines
15
Q

(osteosarcoma)

  1. what % of primary bone tumors in dogs are OSAs?
  2. usually found where in bones?
  3. more common in small or large dogs?
  4. how aggressive in cats?
  5. tx?
  6. prog is poor if mets, long-term prog is poor
A
  1. 85%
  2. metaphysis
  3. large dogs
  4. less
  5. tx with chemo
16
Q

(chondrosarcoma)

  1. what % of primary bone tumors are these?
  2. sx ^ survival, but long term survival still poor
A
  1. 5-10%
17
Q

fibrosarcomas and hemangiosarcomas are the next most common bone tumors in dogs

A
18
Q

metastatic bone tumors usually go where?

A

diaphysis