Objectively, it is a puzzler.
But I look at it subjectively.
Thank God my wife, who had no symptoms, requested a CAT scan.
They found SCLC.
She is well and NED 2 years out of treatment.
Without the scan, I don't see how she could be in the same boat she's in now.
If CAT scan results are also showing "benign" lung cancers(!),
then methods will be developed to cull out these results.
Maybe it hasn't been proven objectively to be beneficial, but I'm a believer.