I have had my seroma drained 4 times and it just comes back. The last time was 3 weeks ago. I was told it's best to just leave it now and hopefully it will be reabsorbed. I have now been given dates for my radiotherapy and am worried they won't do it if I still have a seroma. I have Grade 3 triple negative and my biopsy after surgery showed cancer cells in 9 out of 20 lymph nodes. Very worried that it might be too late if radiotherapy delayed due to the seroma.