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General Surgery · Breast: breast conservation
Sample itemA 40-year-old woman has a 2 cm invasive ductal carcinoma in the upper outer quadrant of the left breast. At 19 years of age she received mantle field radiotherapy for Hodgkin lymphoma. Which surgery is most appropriate?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
B. Mastectomy, because breast radiotherapy cannot be repeated safely
Breast conservation depends on postoperative whole-breast radiotherapy. A previous therapeutic dose to the chest wall or breast is a contraindication to further radiation, because of the cumulative risk to skin, lung and heart. Other contraindications include multicentric disease, diffuse malignant calcification and a large tumour-to-breast ratio.
Option by option
A. Quadrantectomy with a second course of mantle radiotherapy
A repeat mantle-field course would exceed safe tissue tolerance and is not offered.
B. Mastectomy, because breast radiotherapy cannot be repeated safely (correct)
Correct. Prior chest irradiation precludes the radiotherapy that conservation needs, so mastectomy is advised.
C. Wide local excision followed by whole breast radiotherapy
Whole breast radiotherapy would be a second high-dose course to an already irradiated field.
D. Wide local excision alone without radiotherapy
Omitting radiotherapy after conservation substantially increases local recurrence.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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