General Discussion

It is also grade group 5. Grade is an indication of how abnormal the cells look. Prostate cancer looks at the two most frequent cell types and grades each for level of abnormality, then adds them together (so Biden's is either 4+5 or 5+4, with the latter being worse than the former). Stage is an indication of how large the tumor is and how far it has spread - because it has metastasized to the bone it is likely stage IVB.

Many, many cancers are diagnosed after they metastasis - even by MDs with all the tools and tests. This is especially true with very aggressive tumors - which often metastasize before they are large enough to be detected.

His ignorance is showing - on many levels.