Biopsy Techniques in Oral Surgery — NEET MDS | CrackMDS

Excisional. Excisional biopsy removes small lesions entirely.

Deep masses, salivary glands, lymph nodes. FNAC samples deep masses, salivary glands and nodes.

Scalpel (tissue) biopsy confirmation. Brush biopsy is a screening tool; positives need histologic confirmation.

⭐ High-Yield Facts for Exam

Incisional biopsy — removes a representative portion (with a margin of normal tissue) of a large or suspicious lesion for diagnosis before definitive treatment.
Excisional biopsy — removes the entire lesion; suited to small (<1 cm), benign-appearing lesions (both diagnostic and therapeutic).
FNAC (fine-needle aspiration cytology) — for deep masses, salivary glands and lymph nodes.
Brush biopsy — a screening/cytology tool for suspicious mucosal lesions (positive result needs scalpel confirmation).

Take representative tissue, avoid necrotic centres, orient and fix the specimen properly (10% formalin), and include a margin where indicated.

Incisional = large lesions; excisional = small (<1 cm); FNAC = deep/lymph node/salivary; brush = screening.

Q1. Which biopsy is best for a small (<1 cm) benign-looking lesion?

A. Incisional

B. Excisional

C. FNAC

D. Brush

Show Answer

✅ Answer: B

Excisional biopsy removes small lesions entirely.

Q2. FNAC is most useful for:

A. Surface ulcers

B. Deep masses, salivary glands, lymph nodes

C. Enamel defects

D. Caries

Show Answer

✅ Answer: B

FNAC samples deep masses, salivary glands and nodes.

Q3. A positive brush biopsy should be followed by:

A. No further action

B. Scalpel (tissue) biopsy confirmation

C. Extraction

D. Antibiotics

Show Answer

✅ Answer: B

Brush biopsy is a screening tool; positives need histologic confirmation.

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