Baker's Cyst on POCUS 63yo w p/w pain and swelling behind knee. Probe on knee crease, and bam - POCUS for the win. Baker's Cyst. synovial lined, medial outpouching from joint (see the neck/stalk?, looks like a speech bubble, need to see this for defin dx) that pops out between medial head of gastrocnemius and semimembranosus. Sign of intraarticular joint path. use color to r/o aneurysm. Global Ultrasound Institute @globalultrasou1 #Bakers #Cyst #POCUS #ultrasound #knee #clinical #msk