Sorry I forgot to mention that if things don't improve or worsen,to contact your radiologist/Oncologist for evaluation.
All the best...
Hi,
Yes, some people can develop "radiation pneumonitis," a lung reaction that causes a cough, shortness of breath three to nine months after completing treatment.
I also had developed the same symptoms that eventually went away after a while.
Please click on the link below for more information on radiation side effects.
http://www.radiologyinfo.org/en/info.cfm?pg=breastcancer&bhcp=1#4
I Hope you'll feel better soon.... :)