Common things are common, except when the diagnosis is rare
During my training at Hennepin County Medical Center (HCMC) in Minneapolis, MN, my mentor would use the following teaching pearl during rounds: “When you hear hoofbeats, think of horses not zebras!” He would also frequently use: “If it looks like a duck, swims like a duck, and quacks like a duck, then it probably is a duck.” What did my mentor, the Sage of HCMC, mean by this?
From Wikipedia: “Zebra …
Common things are common, except when the diagnosis is rare


A 70-year-old woman with hypothyroidism fell and fractured her hip. During preoperative evaluation for hip fracture repair, she mentions recent mild fatigue, which has not significantly limited performance of her daily activities, and ongoing right upper-quadrant abdominal pain after eating. She takes levothyroxine, 0.075 …


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