Lymphedema would be my guess. I have a golf ball sized "lump" under my chin, kinda hard, feels swollen, worse in the mornings. Docs said it was lymphedema last time I was there in early August.
"T"
57 Cardiac bypass 11/07 Cardiac stents 10/2012 Dx'd 11/30/2012 Tx N2b MO Stage IV HPV+ Palatine Tonsillectomy/Biopsies 12-21-12 Selective Neck Dissection/Lingual Tonsillectomy/biopsies TORS 2/7/13 Emergency Surgery/Bleeding 2/18/13 3/13/2013 30rads/6chemo Finished Tx 4/24/13 NED Since