Mastectomy with planned radiotherapy plus nipple-sparing request — technique choice, timing and envelope safety

Model answer

(A) Technique counsel with choice factors and BREAST-Q (4 marks)

• Frame the choice through preferences, breast characteristics, imaging, comorbidities, smoking, prior irradiation and planned adjuvants — her likely PMRT sits inside this checklist from the start.^[1]
• State the Cochrane boundary: 35 non-randomised studies with 57,555 participants leave no superior technique for all women, with mostly observational evidence — offer every technically eligible option rather than one best operation.^[1]
• Give the BREAST-Q direction: 219 screened with 9 included and 2129 implant plus 825 autologous show satisfaction, sexual and psychosocial well-being higher with autologous and physical no different.^[19]
• Anchor with MROC: 2013 women with 1490 implant plus 523 autologous across 11 centres show greater breast satisfaction and psychosocial and sexual well-being with autologous at 2 years.^[20]

(B) Timing under PMRT with complications and recurrence (4 marks)

• Quote the PMRT penalty: 1105 patients in 11 studies show PMRT plus reconstruction multiplies morbidity, with PMRT detrimental to outcome.^[13]
• Separate technique under PMRT: 204 patients show expander/implant higher reoperation and failure than autologous in both immediate and delayed settings — her planned radiotherapy favours autologous.^[14]
• Quote timing horizons: immediate and delayed share similar long-term outcomes with immediate better short to medium-term quality of life, while delayed wins 30-day complications — do not let 30-day numbers alone decide.^[6]
• Close the oncology loop: 55 studies with 14,217 patients show delayed autologous similar locoregional recurrence to immediate, with oncologic concerns not a reason to withhold timing or technique — timing follows radiotherapy and patient factors, not recurrence fear.^[3]

(C) Nipple decision with margin and wound numbers (2 marks)

• Apply the margin absolute: a positive margin is an absolute contraindication for nipple preservation, with NAC recurrence acceptably low at 0-3.7% only under strict selection.^[17]
• Support with series numbers: 322 patients with 588 NSM carry 18.9% wound complications and 1% local chest-wall recurrence with none involving NAC, while tobacco and adjuvant radiation remain the top complication risks — counsel smoking cessation and radiotherapy risk before promising the nipple.^[18]
• Decide for her: nipple-sparing immediate implant is conditional on no nipple involvement with mandatory intraoperative margin assessment; with likely PMRT, favour delayed autologous or carefully counselled immediate reconstruction with at least 3 months, commonly 6 months, delay when reconstruction follows radiotherapy.^[17][6]