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KMID : 0361620220570030249
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Journal of the Korean Orthopaedic Association
2022 Volume.57 No. 3 p.249 ~ p.253
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Extra-Articular Chondrolipoma of the Knee
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Kim Hee-June
Park Kyeong-Hyeon
Lee Hyun-Joo
Kyung Hee-Soo
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Abstract
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Chondrolipoma is a rare benign mesenchymoma containing mature cartilage and adipose tissues. Chondrolipoma has been encountered mainly in the oral cavity and breast; however, this type of mesenchymoma occurs extremely rarely in the knee area. This paper reports a case of a 60-year-old woman who presented with a two-year history of a palpable mass lesion at the anterior side of the left knee.
Magnetic resonance imaging showed a mass lesion adjacent to the medial side of the patellar tendon. The mass had a heterogenous nature, consisting of fat components and calcification. Surgical excision was performed. The size of the excised mass was approximately 4.5 cm×3 cm×4 cm, and it had a round shape and was encapsulated. The posterior part of the mass had a mixed pattern comprised of fat and cartilage tissues. A pathological examination showed that the chondrolipoma was composed of mature adipose and hyaline cartilage tissues.
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KEYWORD
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chondrolipoma, mesenchymoma, knee
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