Confusion

My situtation is this.  I am an American living in Thailand.  I had an episode of ^BP that could not be controlled.  There was a CT scan preformed to determined if the renal artery was restricted.  No restriction but tumors were found on the L Adrenal and in the upper L lung and the finding of the radiologist was they were malignant.  After consulting with specialists it was determined to remove the adrenal tumor and follow the lung lesion.  The adrenal tumor was removed and was begign.  A three month follow up CT scan of the lung showed no change.  The recommendation now is either a six month follow up CT scan or the removal of the upper lobe of the left lung.   I would appreciate any thoughts or imput.  It seems to me that six months is a long time to go without a follow up and that removal of the lobe is a bit extreme also.