A Rare Case of Green Gelatinous Mass Formation on a Deep Brain Stimulation Implantable Pulse Generator.

Although the perioperative period of deep brain stimulation (DBS) treatment is undoubtedly pivotal for immediate therapeutic success, long-term treatment efficacy and reliability ultimately depend on the durability, functionality and (bio)compatibility of all implanted components. While routine monitoring generally helps prevent or timely correct potential functionality and durability issues, biocompatibility issues can be challenging to appropriately and timely diagnose and manage.