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Do your post-operative rectal fields differ from pre-operative fields?

For those that tend to contour rather than set fields based on bony anatomy, how do you draw your CTVs?
1 Answer
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Radiation Oncology · Memorial Sloan-Kettering Cancer Center
Answered on

You must wire and include the perineal scar. This is counterintuitive because APR is a "big surgery". But there can be surgical marginal miss and recurrences there. Often, the inguinal nodes will be at risk if the tumor was below the dentate line. Be especially careful to exclude small bowel as much...

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