V1.1 of ESTRO guidelines:
✤
CRANIAL:
the caudal edge of the
sternoclavicular joint as maximum
✤
CAUDAL
: breast shape still visible
✤
ANTERIOR:
5mm under skin, except for T4b-
d
✤
POSTERIOR:
ventral side of the major
pectoral muscle or ribs/intercostal muscles. In
the caudal part, exclude the subcutaneous fat
from the abdominal wall.
✤
LATERAL
: visible glandular tissue.
The
thoracic vessels can be helpful, but not
imperative to include.
✤
MEDIAL
: lateral to medial mamary branches
(if visible), maximally to the ipsilateral