Breast cancer
UPDATED --- Radiotherapy for early breast cancer

Delphine (52 years old)

Delphine is a 52-year-old general practitioner. During her free time, she enjoys visiting a museum. Recently, she was diagnosed with early breast cancer following a screening mammography.

Assessment summary

  • No relevant medical history
  • No family history of breast or ovarian cancer
  • Postmenopausal
  • Stage and tumour biology at diagnosis:
    • cT1bN0M0
    • ER 100%, PgR 100%, HER2 IHC 1+, Ki67 10%
  • Upfront BCS + SLNB
  • Pathology report:
    • G1 invasive carcinoma of NST
    • Unifocal, 12 mm, pT1c
    • Lymphovascular or perineural invasion absent
    • R0 resection
    • pN0 (0/3 sn)
  • Multidisciplinary board meeting: postoperative RT and endocrine therapy

Which radiotherapy option would you choose for this patient?