26: Diagnostic Tests - Abbott Flashcards
1
Q
Curettage Tips
A
- destructive, not diagnostic
- never appropriate for melanocytic lesions
- used as treatment after achieving diagnosis
2
Q
Shave/Saucerization Keys
A
- most common technique for pigmented lesions and tumors
- allows assessment of lesion borders
- saucerization = deep shave biopsy
- place specimen in container with formalin
3
Q
Punch Biopsy Keys
A
- used for lesions with dermal and suQ components
- only useful when can remove entire lesion
- don’t do 2 mm punch, beware of going more than 5mm
- avoid excoriations/ulcers and pre-treated lesions
4
Q
Direct Immunoflourescence Keys
A
- for blister: Ab against patients perilesional skin (also do regular punch biopsy)
5
Q
Nail Fungus Keys
A
- PAS histopathological staining
- cleanse affected nails with alcohol or soap/water and dry
- clip to most proximal point possible without discomfort
- nkot recommeneded to treat with terbinafine without a diagnostic confirmation
6
Q
if it is concerning enough to biopsy …
A
it is concerning enough to remove if it is a pigmented lesion
- do not take just a part of it
7
Q
A
dysplastic nevus CNAD
compound nevus architectural disorder
8
Q
talon noir
A
collection of blood in strateum corneum
due to trauma
9
Q
tense bullae arise in normal or erythematous skin
A
bullous pemphigoid
10
Q
what type of biopsy for vasculitis?
A
lesional DIF
- observe palpable purpura
11
Q
ratio excisional biopsy
A
3-4:1
