this may sound like a stupid question to some but my brother has never asked his radiation or chemo doctors these questions. he has had 30 radiations on the tumor and lymph nodes last october. he just had his 7 chemo treatment. the radiation doctor told him that IF he knew he had stage IV before he started the radiation treatments he would only have given him 20 treatments. the chemo dr. when this started said he wld be getting 3 treatments. then it went to 3-4 and then when those were finished 5 and 6 came and now 7. he had a pet scan after xmas and it showed "NO ACTIVE cancer", whatever that means. she did not say he was in remission or it was gone just not active. so i figured she is giving this extra treatments to kill any rogue cells circulating. is there a limit on how many chemo treatments a person can have in a lifetime before it damages their healthy organs? by the way, he was doing carboplatin the first four treatments and the dr. took that out for #5,6, & 7.