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Screen-detected Prognosis — SCE Medical Oncology MCQ

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HardBreast CancerScreen-detected PrognosisSCE Medical Oncology

A 67-year-old has a 9 mm grade 2, ER-positive, HER2-negative, node-negative invasive breast cancer excised with clear margins and agrees to at least five years of endocrine therapy. Which radiotherapy discussion reflects NICE guidance?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: AConsider omission after explaining about 5% versus 1% five-year local recurrence and unchanged 10-year survival

Explanation lettering: D = shown as B · E = shown as C · B = shown as D · C = shown as E

A is correct. She meets the exact NICE low-risk definition: age at least 65, T1N0, grade 1 or 2, ER-positive, HER2-negative, clear margins and willingness to take endocrine therapy. NICE advises discussion rather than automatic omission, explaining that radiotherapy reduces five-year local recurrence from about 50 to 10 per 1,000 but does not change 10-year overall survival. HER2 positivity, nodal disease, higher grade or unwillingness to take endocrine therapy would move her outside this option. Chemotherapy is not a local-control replacement.

Reference: NICE NG101 low-risk breast radiotherapy recommendations: https://www.nice.org.uk/guidance/ng101/chapter/Recommendations