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Radiation time frame -effect on tumor reduction

Posts: 188
Joined: Apr 2010

Anyone know if there a time frame in which radiation is supposed to result in tumor reduction?


Hondo's picture
Posts: 6397
Joined: Apr 2009

I am not sure about a set time frame, but all through treatment the doc was taking scans and x-rays so I am sure some of this was checking on to see if the tumor was shrinking

Take care

Kent Cass's picture
Kent Cass
Posts: 1870
Joined: Nov 2009

NPC that showed with two tumors on the left side of my neck, with 20 places getting zapped each rad session, and Cisplatin and FU5 in the most aggressive regime out there= watched my tumors shrink gradually until they were totally gone by the end of the 7th week of treatment. By four weeks they had gone from Quarter size down to the size of a pea, and week.

Best of luck coming at ya.


Skiffin16's picture
Posts: 8285
Joined: Sep 2009

I had my primary (tonsils) removed upfront. But still had a thumb sized tumor (secondary) on my throat starting out.

I also had nine weeks (three week cycles) of Cisplatin, Taxotere and 5FU, followed by seven weeks of daily rads, and weekly Carboplatin.

After the second three week cycle the tumor was barely felt and not seen. By the end of the third cycle it was completely gone, CT confirmed this before going into the seven week regime'.

Best to you and your wife Clear...

charles55's picture
Posts: 87
Joined: Aug 2010

If it is true that radiation works in a 7~10day lag, that should be when the cancer starts reacting to it. That probably is about right since I think most of us started to feel its effects about then. And like any bell curve distribution, the lion's share of the effects (the greatest effect) will come in the middle of the treatment (2 through 4 weeks). Often we get a boost of the radiation level at the last treatments to kill the last, most resistant cancer cells.

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