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KMID : 1037920140010010054
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Arthroscopy and Orthopedic Sports Medicine
2014 Volume.1 No. 1 p.54 ~ p.58
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Intra-articular synovial lipoma in the posteromedial compartment of the knee
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Ku Jong-Hoei
Cho Hyung-Lae
Park Jong-Tae
Wang Tae-Hyun
Yang Hui-Sun
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Abstract
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Intra-articular synovial lipoma of the knee joint is exceedingly rare. Although there has been one documented case of an open excision in Korean literature, our report presents a first description treated entirely by arthroscopic methods. A 37-year-old female patient suffered from a catching or intermittent locking of the knee, like a loose body. The arthroscopy revealed a globular, yellowish tumor extending from the posteromedial capsule into the joint space. The mass was around the posterior horn of the medial meniscus and showed signal intensity similar to subcutaneous fat on T1- and T2-weighted magnetic resonance images. The tumor was totally excised under arthroscopic guidance and histological examination of the specimen revealed a tumor composed of mature adipose cells covered with a thin fibrous tissue. Thus, intra-articular synovial lipoma should be considered in the differential diagnoses when examining a patient with catching or locking of the knee.
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KEYWORD
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Arthroscopic excision, Intra-articular synovial lipoma, Knee
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