Year 1952, place Central Medical Board (Kelvin House). Full aircrew medical for Limited P.C. as GD Pilot. Radiographer notes spot on lung - get him into Wroughton to check it out. ENT man at Wroughton gets in on the act: says: "your sinuses are bunged up" !
"But they can't be, have just been flying (unpressurised) Meteor T7 to FL350, no trouble up or down?" - "Don't argue ! If I say they're bunged up, they're bunged up !" Cannula pushed up snout. hosed out, repeat ad lib. for a few days. No better, bilateral radical antroscopy (reamer holes out), Face swells up like a balloon for a couple of weeks, no ill effects. ENT man happy - job done !
That, I suggest, is the only real, permanent answer.
(The spot ? - bronchosopy (not a bundle of laughs): it's bronchiectasis (irreversible). Could be fixed surgically [excise affected bit], but would cost RAF Arm+Leg as job outsourced to King's surgeon, and we don't need pilots all that much [King died ! - so just as well, perhaps].
First restricted to 10,000 ft for a couple of years, then chop (ATC for 17 years). Spot no bigger today. Ah, well, c'est la vie).