Greetings Evaldas,
I'm so sorry to hear your doctor lost your lab reports.
If I were you, I would go to another doctor, and if you can't see another doctor, I would demand that the doctor re-do the tests so you can ask for a copy of the report. the report is yours for the asking. I have all my reports in a file I made for myself. This way all I have to do is bring the file with me when I see any new doctors.
Swollen lymph nodes can be swollen for many reasons. They do their job by filtering out all the bacteria and viruses. You mentioned you had a slight cold and trouble with your throat back in December. That could be why you have a swollen gland.
The only definitive way to find out of a lymph node is cancerous is to have it biopsied. The best way is to have the entire node removed and tested. Some doctors suggest having a less evasive form of biopsy such as a fine needle biopsy, but this procedure is not 100% accurate.
It can miss a cancerous spot in the node. It only tests what ever the needle pulled out of the node. I think they call it an excisional biopsy when they take out the entire lump?
you can google it to find out.
Also, some people who have forms of lymphoma's
don't always have symptoms. they're called B symptoms.
My best suggestion would be for you to NOT forget about the lost report and go see another doctor. Sometimes our gut instincts are correct. But if we worry a lot about our health, our hunch's might not always be right.
I wish you the best outcome on your health problem.
usually a dr. will first prescribe an antibiotic as first course treatment for an enlarged lymphnode. Then they make you come back to see if it went away. IF it didn't go away, then they refer you to either an ENT surgeon and have them do a biopsy.
Good Luck,
sincerely,
Linda