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Intra-articular synovial lipoma of the knee joint (located in the lateral recess): a case report and review of the literature.

Abstract

This report describes a rare intra-articular synovial lipoma of the knee joint which developed in a 66-year-old female. The patient suffered from sudden knee pain and a catching or slight interruption of normal motion of the left knee and then noticed the tumor. The tumor was located in the lateral recess of the knee joint and showed a signal intensity similar to subcutaneous fat on T1 and T2()-weighted magnetic resonance images. The arthroscopy revealed a smooth, globular, yellowish, encapsulated tumor extending into the lateral recess from the surface of the lateral condyle and the tumor was totally excised under arthroscopic guidance. Histologic examination of the specimen revealed a tumor composed of mature adipose cells covered by a thin fibrous layer of varying thickness and normal synovial lining cells. The diagnosis was intra-articular synovial lipoma. Intra-articular synovial lipomas should be distinguished from other similar lipomatoid conditions such as Hoffa disease and villous lipomatous proliferation of the synovial membrane (lipoma arborescens). Intra-articular synovial lipoma should be considered in the differential diagnoses when examining a patient with sudden knee pain, and a catching or locking knee.

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  • Authors+Show Affiliations

    ,

    Department of Orthopaedic Surgery, Nagano Red Cross Hospital, 5-22-1 Wakasato, Nagano, Nagano Prefecture 380-8582, Japan. kenichi923hirano@ybb.ne.jp

    ,

    Source

    The Knee 14:1 2007 Jan pg 63-7

    MeSH

    Adult
    Arthroscopy
    Diagnosis, Differential
    Female
    Humans
    Joint Diseases
    Knee Joint
    Lipoma
    Magnetic Resonance Imaging
    Soft Tissue Neoplasms

    Pub Type(s)

    Case Reports
    Journal Article
    Review

    Language

    eng

    PubMed ID

    17127064

    Citation

    Hirano, Kenichi, et al. "Intra-articular Synovial Lipoma of the Knee Joint (located in the Lateral Recess): a Case Report and Review of the Literature." The Knee, vol. 14, no. 1, 2007, pp. 63-7.
    Hirano K, Deguchi M, Kanamono T. Intra-articular synovial lipoma of the knee joint (located in the lateral recess): a case report and review of the literature. Knee. 2007;14(1):63-7.
    Hirano, K., Deguchi, M., & Kanamono, T. (2007). Intra-articular synovial lipoma of the knee joint (located in the lateral recess): a case report and review of the literature. The Knee, 14(1), pp. 63-7.
    Hirano K, Deguchi M, Kanamono T. Intra-articular Synovial Lipoma of the Knee Joint (located in the Lateral Recess): a Case Report and Review of the Literature. Knee. 2007;14(1):63-7. PubMed PMID: 17127064.
    * Article titles in AMA citation format should be in sentence-case
    TY - JOUR T1 - Intra-articular synovial lipoma of the knee joint (located in the lateral recess): a case report and review of the literature. AU - Hirano,Kenichi, AU - Deguchi,Masao, AU - Kanamono,Toshihisa, Y1 - 2006/11/28/ PY - 2006/06/17/received PY - 2006/09/22/revised PY - 2006/10/15/accepted PY - 2006/11/28/pubmed PY - 2007/3/21/medline PY - 2006/11/28/entrez SP - 63 EP - 7 JF - The Knee JO - Knee VL - 14 IS - 1 N2 - This report describes a rare intra-articular synovial lipoma of the knee joint which developed in a 66-year-old female. The patient suffered from sudden knee pain and a catching or slight interruption of normal motion of the left knee and then noticed the tumor. The tumor was located in the lateral recess of the knee joint and showed a signal intensity similar to subcutaneous fat on T1 and T2()-weighted magnetic resonance images. The arthroscopy revealed a smooth, globular, yellowish, encapsulated tumor extending into the lateral recess from the surface of the lateral condyle and the tumor was totally excised under arthroscopic guidance. Histologic examination of the specimen revealed a tumor composed of mature adipose cells covered by a thin fibrous layer of varying thickness and normal synovial lining cells. The diagnosis was intra-articular synovial lipoma. Intra-articular synovial lipomas should be distinguished from other similar lipomatoid conditions such as Hoffa disease and villous lipomatous proliferation of the synovial membrane (lipoma arborescens). Intra-articular synovial lipoma should be considered in the differential diagnoses when examining a patient with sudden knee pain, and a catching or locking knee. SN - 0968-0160 UR - https://www.unboundmedicine.com/medline/citation/17127064/Intra_articular_synovial_lipoma_of_the_knee_joint__located_in_the_lateral_recess_:_a_case_report_and_review_of_the_literature_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0968-0160(06)00173-6 DB - PRIME DP - Unbound Medicine ER -