Biopsy Principles

Question 1

Advantages of Punch biopsy

Answer 1

can vary depth but can get full thickness
if a small lesion, then is excisional
good for representative sample

Question 2

Disadvantages of Punch Biopsy

Answer 2

Usually not excisional
Scar potential
Larger sizes are hard to close nicely

Question 3

Advantages of Shave Biopsy

Answer 3

Versatile
Less Scaring Potential
Quick
Great with raised lesions

Question 4

Disadvantages of Shave Biopsy

Answer 4

Usually not full thickness

Unless shallow, not curative

Question 5

Advantages of Excisional Biopsy

Answer 5

For many lesions, Curative
margins
Pathologist has lots to work with for a diagnosis

Question 6

Disadvantages of Excisional Biopsy

Answer 6

Takes longer
Will have scar
More invasive (infection risk, bleeding)

Question 7

Types of destruction of lesions

Answer 7

Nitrogen (gold standard)
Petro chemicals, but these arent nearly as cold
E/M 
(electrocautery and lasers)
Pharmacological