Basic Principles of Biopsy Flashcards Preview

Oral Surgery Final > Basic Principles of Biopsy > Flashcards

Flashcards in Basic Principles of Biopsy Deck (29)
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1
Q

Indications for Biopsy

A

Lesions that persist for two or more weeks w/ no known reason

Any inflammatory lesion doesnt respond to local therapy within 2 weeks

2
Q

History of Lesion

A

How long has been there?

Has lesion changed in size? How fast?

Lesion changed in character?

3
Q

Bulla

A

Loculated fluid in or under epithelium of mucosa

4
Q

Erosion

A

Superficial ulcer

5
Q

Macule

A

Circumscribed area of color change w/o elevation

6
Q

Papule

A

Small palpable mass, elevated above the epithelial surface

7
Q

Nodule

A

Large palpable mass, elevated above epithelial surface

8
Q

Plaque

A

Flat elevated lesion, the confluence of papules

9
Q

Pustules

A

Cloudy or white vesicles containing pus

10
Q

Scale

A

Macroscopic accumulation of keratin

11
Q

Ulcer

A

Loss of epithelium

12
Q

Vesicle

A

Small loculation of fluid in or under epithelium containing serous fluid (associated with herpes)

13
Q

Clinical Exam

A
Size/shape
Single/multiple
Surface
Color
Borders (fixed or freely movable)
14
Q

Lesions that raise suspicion of malignancy

A
Erythroplasia
Ulceration
Duration
Growth Rate
Bleeding
Induration
Fixation
15
Q

Types of Biopsies

A
Oral Cytology
Aspiration Biopsy
Fine Needle
Incisional
Excisional
16
Q

Oral Cytology

A

Needed - large areas of mucosal change, need monitoring dysplastic tissue (single cells)

Superficial surface area
Not liked by oral paths

17
Q

Aspiration

A

Lesions suspected to contain fluid - done before biopsies
Intraosseous lessions

Vascular (stop if so) or avascular check!!!

18
Q

Fine needle biopsy

A

Pass needle into suspected mass, small shavings of tissue are obtained in barrel of syringe.
Preliminary diagnosis

19
Q

Incisional

A

Greater than 1 cm
Hazardous location
High Suspicion of malignancy
Closure

20
Q

Incisional Techniques

A

Representative area
Wedge fashion - deep and narrow
Include normal tissue

21
Q

Excisional

A

Less than 1 cm
Benign appearance
Closure

22
Q

Excisional Technique

A

Entire lesion

Margin of normal tissue (2-3 mm)

23
Q

Soft Tissue Biopsy - Local Anesthesia

A

Wait 10 mins for hemostasis

Block vs local infiltration

24
Q

Soft Tissue Biopsy - Incision

A

Avoid electrosurgery
Ellipse converging to form V
Maintain parallel w/ nerves/vessels
2-3 mm border for benign, 5 for malignant

25
Q

Soft Tissue Biopsy - Specimen Care

A

10% formalin solution
20 times volume of specimen
Total immersion

26
Q

Soft Tissue Biopsy Hemostasis

A
Avoid high volume suction
Gauze compress
Gauze wrap over low-volume suction
Electrocautery
Suture ligation
27
Q

Soft Tissue Biopsy - Closure

A

Undermine mucosa
Primary closure
Surgical dressing

28
Q

Intraosseous Lesion Biopsy

A

Aspiration - radiolucent lesions

29
Q

Mucoperiosteal Flaps

A

Sharp incisions
Subperiosteal plane
4-5 mm of sound bone around lesion