PET Test question

Just had a PET test and don't really understand one of the things on it.  I have not had time to talk to my doctor yet.  Compared to my PET test on March 20, 2008 the only significant interval change is for enlargement of a left submandibular gland node which is now hypermetabolic.  Currently this node measures on the order of 14 x 17 mm on scan 40.  Previously this node was normal in size and non-hypermetabolic.  The node previously measured 4 x 7 mm.  Maximum SUV of the lymph node is 7.5.  What does all of this mean?

[japdip]

Without benefit of the films all I can say is that the node in question has become enlarged since the previous films and is showing more activity or growth. The node is beneath the lower jaw. I'm sure your Dr. will give you a complete explanation of the entire report.     Regards ....