I had Papillary thyroid cancer 1 year ago and I have just had my check up and all is well on this front but I have been having problems in my throat area and I assumed thr thyroid cancer had returned.  I was relieved that it hadn't but started to really worry as my swallowing food was getting really painful.  J awoke with my Oncology nurse that told me to look at my own throat as covid rules restrict them from looking down throats.  I could clearly see I had a big lump on one side and smaller raised lumps on the other.  A barium swallow xray was ordered and they diagnosed a pharynx retention cyst and a polyoidal lesion. My throat surgeon then referred me for an urgent endoscopy which I had yesterday but at a different hospital, not at the hospital who have all my medical records.  

The Endoscopic exam found only a hiatus Hernia and nothing else so took no biopsy.  I am totally confused. How can one test reveal one thing and another find nothing! 

Can anyone help please?