Is this likely Cane Scale or just Nothing?

Compared against a few reference pics but the diamond shape not a visual match to my eyes.

Don’t recognize it as a leaf scar or wind damage.

Always gives appearance that could slid finger nail under edge and pull it off - l can’t.

Another pic after OFAL knife surgery … no idea but three “ circles make me wonder if remnants of old leafing site or node as l call them. No idea why weird “callous”. Still think its a warning sign.