fc3dedfd_Fireside_Girls___Disney_Wiki__Notes
[Episode] "I Scream, You Scream" [Patches] Tonsillectomy Patch [Notes] 
Earned by Isabella after getting her tonsils removed. In real life, there are many Girl Scout patches they relate to just going through a brave act or tough obstacle (there is a patch for braving a house fire, for example), which is most likely where this patch's idea came from. Since Isabella is the only known Fireside Girl to have her tonsils removed, and she is the only one shown earning it, she is the only girl so far known to have gotten it.
Fireside Girls - Disney Wiki
Notes