Dear Dr. West,
My dad was diagnosed with Stage 4 Lung Cancer Adeno in Feb 2013. He had small plerual effusion, which led to the diagnosis. The CT scan showed lower lobe of left lung collapsed , but couldn't see any tumor. The diagnosis was done based on the fluid drained, he is EGFR positive. He completed 4 rounds of Alimta and Cisplatin and went on 2 Alimta maintanence. That was in June 2013.
Then we decided to take a wait and watch approach. His next scan was in late September 2013, and the result was good. The fluid was completely gone, and they did not find anything on the CT scan.
Now he just had another CT scan today, and they found a 3.2 x 1.7 mass on the lower lobe of left lung and small plerual effusion there too. other part of the lung is normal.
my questions are
1. would the mass grow this fast ? from no seen on CT to 3.2 cm in 3 months ?
2. what would be the next steps ? is it necessary to get a biospy to confirm ?
3. since he was tested EGFR positive, would target therapy be a better option this time than chemo ? is another mutation test required, given this is the first time we've seen this mass ?
Thanks for your advices.