repeat radiotherapy: conventional vs stereotactic

Portal Forums Radiation Oncology Chest Radiation repeat radiotherapy: conventional vs stereotactic

This topic contains 3 replies, has 4 voices, and was last updated by  Dr Loiselle 4 years, 2 months ago.

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September 15, 2013 at 12:30 pm  #1259278    

merrill

71 year old otherwise healthy female with Stage IVb thymus carcinoma. Carbo/taxol plus mediastinal radiation of 60gy 3 years ago. Healthy since, now with recurrence of mediastinal mass by superior vena cava. Option offered was low dose conventional re-irradiation of mediastinal tumor /area. Would stereotactic radiotherapy be better option for re-irradation of a mediastinal mass? She is asymptomatic to above.

Thanks.

September 15, 2013 at 1:19 pm  #1259283    
Dr West
Dr West

I’d like to see if we can get some insight from one of our faculty with an expertise in radiation oncology. We’ll hope to get an opinion soon.

In the meantime, here’s a post written about re-irradiation:

http://cancergrace.org/radiation/2011/07/14/repeating-chest-rt/

-Dr. West

September 17, 2013 at 3:41 pm  #1259326    
catdander forum moderator
catdander forum moderator

Sometimes it takes a couple to days for our radiation onc to comment but I’ve asked again just in case.

September 17, 2013 at 6:03 pm  #1259332    

Dr Loiselle

Hi Merrill –

In general, with stereotactic techniques, it is possible to increase dose delivered to the recurrent lesion safely.

How meaningful this is depends on the size/volume of the recurrent lesion. Smaller lesions can be treated to very high doses with stereotactic guidance.

Other variable are important too, in terms of what specific technique is used and how this accounts for variation in location of the recurrent mass with respiration.

With thoracic re-irradiation we usually do use a stereotactic platform.

I hope that helps.

-Dr Loiselle


Chris Loiselle, MD
Radiation Oncologist
Swedish Cancer Institute

Views expressed here represent my opinion, not those of GRACE or Swedish Cancer Institute. This information does not constitute medical advice and is intended to supplement and not replace medical information provided by your doctor.

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