When treating a high risk cutaneous squamous cell carcinoma post-operatively to the tumor bed, do you include the entire pre-op tumor in your PTV or do you include only the scar with margin?

For example, if a 5 x 5 cm squamaous cell carcinoma with deep invasion has been resected via Mohs with negative margins, will your PTV include the entire pre-op 5 x 5 cm tumor?

Answer from: Radiation Oncologist at Academic Institution

Generally, the preoperative tumor. It depends on the type and extent of resection and reconstruction.

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When treating a high risk cutaneous squamous cell carcinoma post-operatively to the tumor bed, do you include the entire pre-op tumor in your PTV or do you include only the scar with margin?

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