FRCS (ORL-HNS) · SECTION 1 SBA

Oral cancer depth of invasion

A 9 mm lateral-tongue squamous carcinoma has a depth of invasion of 7 mm and no clinical nodes. What feature most strongly drives elective neck management?

CHOOSE ONE ANSWER

Best of five

  1. A. The patient’s age alone
  2. B. Depth of invasion and the resulting occult nodal-risk estimate
  3. C. Whether the ulcer is painful
  4. D. A negative palpation examination alone
  5. E. The presence of oral candidiasis
ANSWER AND REASONING

B. Depth of invasion and the resulting occult nodal-risk estimate

For early oral cancer, tumour thickness/depth substantially affects occult metastasis risk and the value of sentinel-node biopsy or elective neck treatment.

Why every option is right or wrong

A. The patient’s age alone: Age affects fitness but is not the principal tumour-risk variable.

B. Depth of invasion and the resulting occult nodal-risk estimate: For early oral cancer, tumour thickness/depth substantially affects occult metastasis risk and the value of sentinel-node biopsy or elective neck treatment.

C. Whether the ulcer is painful: Pain does not reliably stage occult nodal disease.

D. A negative palpation examination alone: A clinically N0 neck can still contain micrometastases.

E. The presence of oral candidiasis: This does not determine regional oncological treatment.

What if the scenario changed?

If the lesion were extremely superficial with a very low estimated nodal risk, observation or less invasive staging could be discussed.

EDUCATIONAL USE

Independent Clinora preparation material; not official JCIE content, an accredited programme or a substitute for local policy and specialist judgement.

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