### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Hi, I am a 38 year old female, and I have TWO HEALTH QUESTIONS to address. About a year ago, I was diagnosed with papillary thyroid cancer and had a total thyroidectomy . A recent ultrasound showed a possible reoccurrence in a couple of lymph nodes. So, for the past 2 weeks, I have been on a low iodine diet, preparing for a PET Scan and RAI uptake scan. During this time (mostly while sitting upright), I noticed a painless throbbing/pulsating sensation in my mid/left back. It grew worse after taking thyrogen shots, and even worse after taking the radioactive iodine pill for the RAI Scan. The pulsating grew very rapid while I was lying on the RAI imaging machine. (HEALTH QUESTION #1): What could this pulsating sensation possibly be, and should I be concerned? I also have Grave s Eye Disease, and have been having some eyelid swelling for about 3-4 months. Both of my top eyelids have a significant lump in them. (HEALTH QUESTION #2): Is this normal for Grave s Eye Disease? Can they be cancerous? Can they be removed?

### output:

Hi Pinkie Question -1 → I really am not sure what is the cause of this throbbing or pulsating sensation. Is it only a sensation or is there a pulsatile swelling? Is it visible and related to any bone?. Our present concern is whether there is any distant spread from the tumor. This question will get answered once the results of the investigation comes out. If there is no evidence of any disease spread (in other words report of RAI and PET are negative) and if it is only a sensation, then I don't think there is any cause for worry. But if you ask me why what is the reason, I don't know. But if there is a recurrence either in lymph nodes or else where you definitely would require treatment. But don't worry, papillary carcinoma thyroid has a very good prognosis or outlook. Q-2 → It is probably due to Graves d/s. Definitely it is not cancerous and you don't need to remove it. Hope that answers your question Chat Doctor. 