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Radiology Signs on Twitter: "Q: What does the "inverted Napoleon hat sign" indicate? ANSWER: https://t.co/ys5PLY8Cm1 #FOAMrad #FOAMed https://t.co/6scqBNEemv" / Twitter
Radiology Matrix - medical education - Matrix Case 334: - Inverted Napoleon hat sign - It is seen when there is bilateral spondylolysis with marked anterolisthesis of L5 on S1 The "brim"
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