glenoid bare area?

Colleagues,
What are your thoughts on this shoulder MRI finding?
47yr female with mild shoulder pain; mild OA of AC joint and mild SASD bursitis on imaging; and this finding—

Do you think this focal chondral thinned zone is a Bare area of the Glenoid, just posterior and not central? Or is it a very focal full thickness chondral defect?

Thanks in advance,
Courtney Tripp