VBG revision to VSG
I know a person that wanted this done. The doctor told her he couldn't promise anything, he'd have to see her stomach before he would know what he could do. She knew it would either be a band or a sleeve.
She woke up with a band. :o( The mesh from the previous band was such that he couldn't do a sleeve safely, it compromised the potential staple line. So it really depends on the scarring and adhesions.