Unusual Toxicity Induced by Radiotherapy

"skin biopsy will be taken under local anesthesia using a patch of lidocaine and prilocaine. In practice, during the skin biopsy, the skin must be cleaned with chlorhexidine or alcohol, to the exclusion of any other antiseptic. The biopsy will preferably be done with a dermatome (or punch, 12 G)."

an additional tumor sample will be taken during programmed diagnostic procedure.

blood sample will be taken for biological collection