James C. (mod-squad and brother of PCa) I know you meant to say perinureal invasion is not uncommon to see when looking at 12 biopsies or so. PIN is not the acronym for that just so others do not get confused if looking at data and things, PIN is a possible precancerous condition seen by pathologist and is not defined as being PCa. (maybe you meant PNI for perinueral invasion??)
Perinureal invasion means in effect- biopsy shows it hit a blood traveling source (vein or nerve type of thing)...it also does not prove PCa migrated....it means it is a possible path, so if a patient sees this the verbage sounds omnious " Perineral Invasion" I think it scares people more than it should. Heard this from informed docs. I don't know if there is an abbreviation for perinureal invasion????