Do your radiation treatment margins change for cutaneous basal cell carcinoma in the adjuvant setting compared to cutaneous squamous cell carcinoma?
What margins do you use for each cancer for photons vs electrons?
If your margins differ between cBCC and cSCC, why?
2 Answers
Mednet MemberInvited Expert
Radiation Oncology · University of Florida
Answered on
1 cm with orthovoltage, 2 cm with electrons collimated on the skin.
Join for free or sign in to see the full answer
Mednet MemberInvited Expert
Radiation Oncology · Varian Medical Systems/Allegheny health network
Answered on
The block margin does differ based on the technique and energy as the size of penumbra is different.
Usual margins are 5 to 20 mm with larger margin for photon and higher energy electrons. Also, margin is larger when block is at cone vs. at surface of the patient as penumbra changes.
Besides, size a...
Join for free or sign in to see the full answer