Thanks for writing to us.
Yes your constant cough may be related to radiation
damage. Its very essential to delineate your extent of radiation damage on your lung by doing a HRCT thorax. With this sort of cough there should be a significant amount of expectoration. Hyperaeration on your lung may be related to lumpectomy
, COPD or pneumothorax
. For that you need to consult a pulmonologist
and get yourself locally examined to exclude all those possibilities one by one.