ANSWER AND REASONINGC. Offer sentinel lymph-node biopsy rather than elective neck dissection
NICE recommends SLNB instead of elective neck dissection for T1–T2 N0 oral cavity cancer when cervical access is not otherwise required; the question tests management of an occult-risk neck, not palpation alone.
Why every option is right or wrong
A. No neck treatment because imaging is negative: A clinically N0 neck can contain occult disease.
B. Radiotherapy to both necks for every T1 lesion: This is not the default strategy described by NICE.
C. Offer sentinel lymph-node biopsy rather than elective neck dissection: NICE recommends SLNB instead of elective neck dissection for T1–T2 N0 oral cavity cancer when cervical access is not otherwise required; the question tests management of an occult-risk neck, not palpation alone.
D. Immediate radical neck dissection: This is disproportionately morbid for a clinically N0 early lesion.
E. Wait for a nodal recurrence before acting: This abandons staging/treatment of known occult-risk disease.
What if the scenario changed?
If a free flap required cervical access, elective neck dissection may be the more appropriate surgical choice.