Same surgery Joan Rivers had and died during.
Surgery center didn't follow proper procedures for reviving persons from a code. Endoscopy is a very simple procedure, and taking a biopsy or cutting off a little polyp or whatever is no biggie at all.
Yet people die every year from it, not from the procedure but from the anethesia. I believe she had a reaction to the anesthesia and there were apparently not personnel there who properly dealt w/that kind of emergency for whatever reason.
Basically, this never should have happened.
Most of the newer docs who specialize in this stuff are using more cutting edge diagnostics now, going thru nose with small line + camera, while patient is awake. Comfortable procedure for the most part, and no drugs so less risk.
Endoscopies continue because they are huge money makers and there ARE some instances where it is necessary, but not for diagnostics.
And that is precisely WHY any changes in mouth, tongue, lips, throat, esophagus, lungs, etc. SHOULD ALWAYS BE SEEN BY A MEDICAL PROFESSIONAL.
Because as a former smoker, we are all still at risk for smoking/combustion related diseases.
Enough with the guessing games, OP needs to see an ENT and/or pulmonologist.
And most of these things are MINOR. Could be a simple polyp on the vocal chord...snip snip....a 5 minute procedure, no biggie.
Could be viral (these things last months), etc.