mold behind drywall near plumbing 39

https://future-wiki.win/index.php/Hidden_Mold_Behind_Drywall:_A_Mold_Remediation_St._Louis_Case_Study

There's a musty smell in the bathroom that I can't quite place, and when I finally checked behind the drywall near the plumbing, I found black mold creeping along the insulation. The pipe had a slow leak for who knows how long, and now the wallboard is soft and stained. I need to cut out the damaged section, fix the pipe, and replace the drywall before it spreads further.