ESTRO Multidisciplinary Management of Breast Cancer 2017

Tumor

Micr. extension

Region with microscopic

extension, within 1.5 cm

of primary tumor

Seroma cavity

Rim of excision

Tumorbed

cav

: That part of the rim

of the seroma cavity where the

resection margin is < 1.5 cm

complete seroma cavity present

Excision, with free resection margins

1.5 cm in

all directions

Excision, with free resections margins

1.5

cm in some directions

CTV

1.5 cm minus free margin

Boersma et al, 2012