Ive recently moved back north to MA to be close to my family. Im waiting to get an appointment with Dana Farber Hospital hopefully this week. Im takinh Tarceva now have been on it for a month. It seemed to shrink the tumor on my neck but my former Chemo dr didnt order a scan last week so I dont know if it is working. Ive got a cluster of blisters on the tumor site. They are freaking me out. Does anyone know what is the cause of them? They are filled with fluid and break open. I called my former Dr 3 times and still havent gotten a call back.