Weekly Case

Title : Case 1

Age / Sex : 71 / M


71/M

C.C.: Incidental knee MR findings




1) What is the structure arrows indicate? (Click to enlarge)

Courtesy: Won-Hee Jee, MD, Kangnam St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea


Diagnosis:

meniscal flounce



Discussion


Findings:
 There is a flounce-like hypointense band in the free edge of the medial meniscus on sagittal fat-suppressed PD SPIR images.

Discussion:
A meniscal flounce is a fold visualized as a S-shaped fold in the free edge of a meniscus on sagittal MR images. A meniscal flounce is thought to be a transient physiologic distortion and may be related to meniscal locations on the tibial plateau. It may be changed by varying the knee position. A meniscal flounce should be considered a normal variant in the absence of other indications of a meniscal tear. A word meaning of flounce is a strip of decorative, usually gathered or pleated material attached by one edge, as on a garment or curtain.

References:
1. Yu JS, Cosgarea AJ, Kaeding CC, Wilson D. Meniscal flounce MR imaging. Radiology 1997;203:513-515 2. Park JS, Ryu KN, Yoon KH. Meniscal flounce on knee MRI: correlation with meniscal locations after positional changes. Am J Roentgenol 2006;187:364-370 The copyright of the images remains with the original supplier.



Correct Answer
Name Institution
남미영:광주 보훈병원
황지영:이화여대 목동병원
김여주:가톨릭 중앙의료원 전공의
김완태:서울보훈병원
임채헌:가톨릭 중앙의료원 전공의
장진희:가톨릭 중앙의료원 전공의

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