mold behind drywall near plumbing 47

https://wiki-triod.win/index.php/How_Gateway_Water_%26_Mold_Handled_Hidden_Mold_Behind_Drywall_After_a_Plumbing_Leak

There's a musty smell in the bathroom that just won't go away, and now I'm worried it's mold taking hold behind the drywall, right where the plumbing runs. The moisture from a slow pipe leak is creating the perfect damp spot for it to spread out of sight, and I know I need to cut into the wall to see the full extent of the problem before it gets worse.