Q: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Besides the tumor itself , the target for the radiation may also include the lymph nodes that drain the area .
A:
Besides the tumour itself , the radiation fields may also include the draining lymph nodes if they are clinically or radiologically involved with tumor , or if there is thought to be a risk of subclinical malignant spread .