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GTV –CTV margin
Longitudinal
•
SCC
GTV + 3 cm proximal and distal
•
ADC
GTV + 3 cm proximal and 5 cm distal (if doses >
45Gy limit to 2 cm in the stomach)*
•
1 cm above any
involved nodes
, whichever is more
cephalad
•
For
proximal tumor
the upper border should not extent
above of the
cricoid cartilage
unless there is gross disease
at that level
•
This margin should be oriented
along the esophageal
mucosa
Wu AJ et Al – Int J Radiat Oncol Biol Phys– 2015