25 / 1983
ESTRO: Evidence-based Radiation Oncology
42% - No invasive tumour foci or DCIS found beyond gross tumour
17% - Invasive tumour foci found < 2 cm from gross tumour
28% - DCIS found > 2 cm from gross tumour
14% - Invasive tumour foci found > 2 cm from gross tumour
10% - DCIS or invasive tumour found 4 cm away from gross tumour
Clinical example: tumour foci beyond
gross tumour in mastectomy specimens
Redrawn from Holland R
et al
(1985) Cancer 56:979-990