1193 / 1498
Considerations on RT volume
•
GTV
= residual disease after
chemotherapy (if any) for a boost dose
•
CTV
= entire orbit
•
PTV
margin = normally 5 mm
• DLBCL of the lacrimal gland alone
CTV for consolidation RT limited
to lacrimal gland
Yahalom et al, IJROBP, 2015