Hi again -since you asked, I will try to explain - I am no expert and won't go into alot of details. I just reply by my experience - I had vocal cord squamous cell cancer - I was diagnosed in late Dec 05 - I had no idea about filing a claim. By early Jan, I just was surfing the web and found info on presumptive AO conditions. I saw respiratory cancer with larynx listed so I decided to go ahead and file - found the e-file Vonapp and just did it mid Jan. No help just my decision. If I had known better, would have filed immediately in Dec and got anonther month in, but it was okay - anyway just lucky to find info.
Claim was awarded 100% Aug 07 - I got retro pay from Jan thru JuJy quickly - one thing I would advise, if you have dependents make sure to file forms for them to be included - it took along time to get the additional for my dependent daughter whom attends university full time.
I had radiation treatments - 36 in all - late Jan thru early March - 5 days a week - the initial fitting of a mask was a bummer - after that its just short and quick radiation of neck every weekday. Hope you have nice technicians like I did - they were always friendly and understanding.
Thats about all I can tell you - I just want you to know that I am okay now (hopefully). But there are residuals - I have some hoarseness and dysphagia - those are now rated 10% each - hated to lose the 100% but hope no more cancer - overall, received 100% for a year and half.
BTW as far as I know your cancer is in larynx so thats the slam-dunk ha ha. Take care and good luck to you.