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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.
Knee 2007; 14(1):63-7KNEE

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.

Authors+Show Affiliations

Department of Orthopaedic Surgery, Nagano Red Cross Hospital, 5-22-1 Wakasato, Nagano, Nagano Prefecture 380-8582, Japan. kenichi923hirano@ybb.ne.jpNo affiliation info availableNo affiliation info available

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 -