So, I have good news for once. The ultrasound showed that the cyst has almost disappeared, so supposedly nothing needs to be done about it. Breathing huge sigh of relief.

36, female, left tonsil HPV+ SCC, T2N1
8/28/13 SCC in left tonsil
9/12/13 surgery:TORS and selective neck dissection (levels II-IV), 23 nodes removed
9/18/13 post surgery biopsy: 2mm clear margins, a 7mm lymph node positive in level IV, no ECL
10/28/13 rad begins, 30 treatments, tomotherapy
12/09/13 radiation ends!
2/10/14 papillary thyroid cancer
2/26/14 PET shows clear neck other than thyroid cancer, but with high uptake in an ovarian cyst
2/27/14 thyroidectomy
3/5/14 pelvic ultrasound