Table 2.

Partial breast irradiation suitable patient selection criteria

Factor	Selection criteria
Patient-related	Age 50 years or more
Tumour-related	Luminal-like subtypes small tumour (≤ 3 cm)
	Clear surgical margins (> 2 mm)
	Node negative (including isolated tumour cells)
	Absence of lymph vascular space invasion
	Non-lobular invasive carcinoma
	Tumour grade 1–2
	Low-to-intermediate grade DCIS, sized ≤ 2.5 cm, clear surgical margins (≥ 3 mm)
	Unicentric or unifocal
Treatment-related	No use of primary systemic therapy and neoadjuvant chemotherapy

DCIS ductal carcinoma in situ