The last 5 frames of a roll of Fuji 200 had the same pattern.Here's the information: A new to me Nikon N90s and my first roll of film.The Fuji was outdated but guaranteed cold stored.My local pro lab was using a newly hired chap who had worked in a one hour shop.
I can't figure out where to lay the blame.(It's usually on my doorstep but the other frames were fine.)

Thank You

Looks like light leak to me. If at the beginning of the roll it can be light striking the felt of the cartridge, elsewhere it may be camera seals. Sometimes you can get this from handling errors at the lab. Sometimes it takes several rolls to track down the culprit.