@josgen I think that recommendation comes from John Barnes. I think the concern may be that if you stretch and move tissue that mobilizes the fascia, it could cause cancer cells to be freed if they are present in the area being treated. Since cancer can metastasize and move around the body, it may be a risk. You wouldn't want to help cancer cells move and spread. It would be a good question to ask your cancer specialist if that could present a risk to you in your situation depending on the locations. I think the fear is that you don't know if cancer is spreading and may be present in other areas so they are cautious about it. That information came from my physical therapist and it may be a general recommendation. My dad had prostate cancer that was treated with an implanted radioactive seed and it never spread. MFR does help get the body moving and functioning better.