Brian and JoAnne...thank you for responding. The MO says the March 2007 PET scan shows no change from the June 2006 PET scan. The Jun 2006 PET showed a 1.3cm node in the right lung and a 1cm node in the left neck that were hot for metastasis. By Nov 2006 the neck node had increased in size to 3cm and the lung node to 1.6cm. The chemo regime Tom began in Nov and completed in February reduced the neck to 2cm and the lung to 1.3cm according to the CT scans. The PET says - still hot.