Intra-articular Lipoma in Posterior Compartment of Knee Joint: A Case Report
Published: November 1, 2023 | DOI: https://doi.org/10.7860/JCDR/2023/66404.18715
R Sundara Raja Perumal, Shriram Natarajan, Senthil Kumar Aiyappan
1. Professor, Department of Radiology, SRM Medical College Hospital and Research Centre, SRMIST, SRM Nagar, Potheri, Chengalpattu Dist., Tamil Nadu, India.
2. Assistant Professor, Department of Radiology, SRM Medical College Hospital and Research Centre, SRMIST, SRM Nagar, Potheri, Chengalpattu Dist., Tamil Nadu, India.
3. Professor and Head, Department of Radiology, SRM Medical College Hospital and Research Centre, SRMIST, SRM Nagar, Potheri, Chengalpattu Dist., Tamil Nadu, India.
Correspondence
R Sundara Raja Perumal,
B 43, TVS Green Acre, Phase IV, Kolapakkam, Vandalur Taluk, Chennai-600127, Tamil Nadu, India.
E-mail: majsundp@srmist.edu.in
Lipomas are the most common benign soft tissue tumors, occurring in almost any part of the body and prevalent in 2% of the population. The occurrence of intra-articular lipoma is rare and mostly documented in the anterior compartment of the knee joint, like the Hoffman pad of fat and suprapatellar region. The incidence of intra-articular lipoma in the posterior compartment of the knee joint is very rare. Herein, the authors presented a case report of a 21-year-old female with a history of chronic intermittent left knee joint pain for the last two years. Magnetic Resonance Imaging (MRI) revealed a well-defined, encapsulated lesion that was hyperintense on T1/T2 images and hypointense on, located in the intercondylar notch, anterior to the proximal half of the posterior cruciate ligament, and closely abutting the ligament. Computed Tomography (CT) showed a fat density lesion (-82 to -93 HU), indicating a lipomatous lesion. The patient underwent laparoscopic removal of this lesion, and histopathology confirmed the fatty nature of the lesion.
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