Ana

A quick google search turned up articles and blogs that indeed Petscans do register sarcoidosis as cancer, as well as pneumonia and other lung inflamations. I'm so sorry to hear about this.
But focus in on the really positive news that the BOT and lymph nodes are all clear. That;s a great sign.
Hang in there until the biopsy reports. It's nervewracking but let's hope for the best here. It's just not fair that you have to deal with this new fear and pain.
Charm