another incident where a tumour has grown into the heart

my husband has lung cancer stage 3 b-it is in his left lung and in the middle of his chest-there is also a huge tumour behind his heart-when he was diagnosed sept 25th-the team said chemo was all the team could offer us-then we got a call that if there was no cancer in the pleura we could have a chance at aggressive radiation with chemo this was to start nov6thth--fri night oct 30th  his heart went into arythmia-they shocked him and got the heart beating normally again in emergency-and we went home-he went into arythmia again on monday night nov 5th shocked again but a catscan the next day revealed the tumour had gone into the heart and the heart was in stress--they gave him metophol to keep his heart regulated but all treatment was cancelled-he went to get tatooed at princess margaret in toronto nov6th-the radiation specialist gave us 5 treatments to make my husband more comfortable-we just finished the 5th treatment today but the team says there is not much else they can do-the radiation oncologist told us his left lung had totally collapsed now-he had had a pleurendectomy oct26th when they checked for cancer cells in the lining of the lung-the surgeon had put talc in hoping the pleura would stick and the lung would reinflate-it did partially but not completly has anyone else faced this problem where the heart is involved-how did the tumour grow so fast in a matter of a month-it is attacking the pulmonary veins leading to the lungs and left ventrical-has anyone encoutered anything similar to this-i looked online -there were 2 people discussing a similar case where the tumour was on the aorta-the one person lasted 7 months with the heasrt problem but this was in 2005 august-the doctors say he could have a heart attack tomorrow-it really shook us up when they told us this-but-it has been 2 weeks-the pet scan we applied for has been cancelled as well-does anyone think seeing a heart specialist would help help-help-any ideas-if so -please respond to the discussion or if you have seen something else like this where did you see the discussion-site-i noticed that the discussion in june july august2005 talked about the use of tarsceva-can anyone tell me about this and lung cancer-i realise there are some other discissions about this medication-but i hoped someone cpuld relate it to this particular case