oncology Flashcards

1
Q

needle core, wedge, and punch biopsies are what time

A

incisional

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2
Q

T/F

excisional biopsies are pre-treatment

A

false – post treatment

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3
Q

What type of biopsy should you use if the treatment would be altered by the biopsy results

A

pre treatment - incisional

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4
Q

T/F

tru cut biopsy can be used on any accessible mass

A

TRUE

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5
Q

T/F

tru cut will maintain the structural integrity of the tissue

A

true

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6
Q

what size punch biopsy to procure a diagnostic sample

A

> 6 mm

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7
Q

do not use punch biopsy for this type of mass

A

hypodermal – tissue could shift and undetected hemorrhage may occur

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8
Q

preferred biopsy for ulcerated or necrotic tumors

A

wedge

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9
Q

what is important to remember about doing a wedge biopsy

A

entire biopsy tract must be removed

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10
Q

use _____ retractors to maintain tissue retraction for deeper lying tumors

A

gelpi

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11
Q

which biopsy method is the best for a splenic tumor

A

excisional - remove entire spleen

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12
Q

T/F

after an excisional biopsy, place a passive drain.

A

FALSE - this will disseminate the cells throughout the entire tract… also eliminate all dead space because seromas are bad

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13
Q

classification system of surgical dosing

A

enneking system

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14
Q

only real application of intracapsular excision

A

lipomas or debulking

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15
Q

goes through the pseudocapsule or perilesional zone surrounding the tumor

A

marginal

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16
Q

marginal lateral marginas for carcinomas

A

<1 cm

17
Q

marginal lateral marginas for mast cell tumors

A

< 2 cm

18
Q

marginal lateral marginas for soft tissues and bone sarcomes

A

< 3 cm

19
Q

marginal lateral marginas for FISS

A

<5 cm

20
Q

lateral margins for wide excisions in the enneking system

A

> 1 - carcinomas
2 - mast cell tumors
3 soft tissues
5 feline iss

21
Q

enneking system - radical

A

removal of entire compartment or body part

22
Q

T/F

when labeling using enneking classifcations, the largest margin used gives the name

A

FALSE - narrow margin trumps all

23
Q

general rule for mast cell tumor margins

A

3 cm lateral and 1 fascial plane deep

24
Q

modified mast cell tumor proportions technique

A

widest diameter of the tumor used for the lateral margins for excision and 1 fascial plane deep

complete margins obtained in 82% of cases

25
Q

benign tumor margins

A

1 cm lateral and deep

26
Q

soft tissue sarcoma surgical margins

A

3 cm lateral and fascial plane deep or 2 muscle planes deep

27
Q

what dye system and what colors of dye are used for inking surgical margins

A

davidson dye system
yellow or black

ink all cut surfaces but not the skin

28
Q

biopsy tissue to formalin ration

A

1:10

29
Q

appropriate fixation tissue thickness

A

0.5 - 1.0 cm

30
Q

how long can specimen be held at the clinic before they must be submitted to lab

A

24 hours

31
Q

R0
R1
R2

A

R0 - no residual tumor
R1 - microscopic residual tumor
R2 - macroscopic residual tumor