An enlargement of the thyroid without FDG uptake tends to indicate, if anything, a process other than malignancy. We would defer to your local doctors on any other thyroid issues, as much more information, including your medical history and physical exams are needed to assess the scan results, and in general GRACE focuses on cancer issues.
I hope that the scan result does not indicate any significant abnormality.
Jul 2008 Wife Liz (51/never smoker) Dx Stage IV NSCLC EGFR exon 19
4 cycles Carbo/alimta, 65% shrinkage
Mar 2010 progression, added Alimta, stable
Sep 2010 multiple brain mets, WBR
Oct 2010 large pericardial effusion, tamponade
Jan 2011 progression, start abraxane
Jun 2011-New liver, brain mets, add Tarceva
Oct 2011-Dx Leptomeningeal carcinomatosis; pulsed Tarceva
At rest Nov 4 2011
Since then: http://cancergrace.org/blog/jim-and-lisa