mold behind drywall near plumbing 40

https://page-wiki.win/index.php/What_to_Do_When_You_Find_Mold_Behind_Drywall_Near_Plumbing

There's this musty smell in the bathroom that just won't go away, and I finally figured out it's mold growing behind the drywall right where the shower pipe runs. The drywall feels soft and spongy if you press on it, and there are these dark, fuzzy patches creeping out from the edges of the access panel. I guess the plumbing had a slow leak for months, and now I'm looking at a real fixer-upper situation.