That does stink! Vent all you want. Hopefully, there are other reasons to cause this uptake, I had my share, but is difficult to say without a biopsy unless it shrinks, disappears in that wait time. I guess the lung suspicion is too deep? An FNAB, under ultrasound guidance, may be possible for the neck lymph node, which results may shed more light in the direction to go.
Good luck, and hope for better answers, reassurance with your meeting.