Misc Flashcards
Why do you heat fix a slide
Dissolves wax
What are impression smears from
From external lesion a from tissue removed
Disadvantages to impression smears
Few cells collected
Contamination
Only secondary bacterial infection
Types of impressions
Single Ar Tzanck method
Tznack method
-Make multiple impressions of lesion before cleaning
-Clean with sterile saline
-Multiple impressions after cleaning, debridement and scab removal
What to do if there’s a delay in imprinting from collection time
Use scalpel blade used ti expose fresh surface
Where are FNAs collected from
Masses-lymph nodes, modular lesions, organs
FN biopsy site prep
Surgical prep for microbiological testing
FN biopsy from body cavity
Peritoneal, thoracic, joints
Equipment for FNA
- 21-25g needle
- 3-20 lm syringe
Larger needles are used tissue cores tend to
Aspirate
Has greater blood contamination
Things to consider in a tissue biopsy
Location
Accessibility
Nature
+/- clip hair
Site prep
Wedge biopsy obtained with
Scalpel
Wedge biopsy advantages
Large sized specimen
Portion or entire lesion
Punch biopsy sizes
3,4,6,8 mm