Looking back at post #1 of this thread, it seems to have contained accurate information, although at the time it was dismissed as speculation.
It's been mentioned elsewhere that Ginsburg [reportedly] received some "treatment" for her "ribs" at Sloane-Kettering in New York, which is of course a cancer-centric hospital.
It's also interesting that although both nodules that were removed were tested and found to be malignant, that no further treatment is planned.
I wish Mrs. Ginsburg no pain for whatever time she has left, but maybe the time is actually coming when even she realizes that it's time to "pull the pin" (as ol' railroad guys would say)...