Phyllodes tumors on the outside of breast??

I’ve had reoccurring phyllodes tumors in my breast. First occurrence was July of 23 I had a 8x3 cm removed with a second occurrence in Jan25. The biopsy I had in Dec. was a horrible experience. It was painful and it resulted in fluid leaking out and now I have developed one on the outside of my breast. I have changed doctors and my current doctor’s recommendation is to have a mastectomy. I’m just wondering if this has happened to anyone else? I can’t find a case online that has this recorded.