616 / 1816
Pre-operative situation
Region with microscopic
extension, within 1.5 cm of
primary tumor
1.5 cm
Tumor
Micr. extension
1.5 cm
Rim of
excision
Excision, with free resection margins
<
1.5 cm in all
directions
Excision, with free resections margins
>
1.5
cm in some directions
Boersma et al, 2012