Lipoma arborescens arising in the extra-articular bursa of the knee joint

被引：3

作者：

Minami, Shinji ^{[1
]}

Miyake, Yusuke ^{[2
]}

Kinoshita, Hirofumi ^{[1
]}

机构：

[1] Naga Municipal Hosp, Dept Orthoped Surg, 1282 Uchita, Wakayama 6496414, Japan

[2] Wakayama Med Univ, Dept Orthoped Surg, 811-1 Kimiidera, Wakayama 6418510, Japan

来源：

SICOT-J | 2016年 / 2卷

关键词：

bursa; extra-articular; knee joint; lipoma arborescens;

D O I：

10.1051/sicotj/2016019

中图分类号：

R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学（修复外科学）];

学科分类号：

摘要：

Lipoma arborescens arising in the extra-articular bursa of the knee joint is extremely rare. We describe an 11-year-old boy who complained of a gradual swelling mass of the lateral knee joint. Magnetic resonance imaging (MRI) showed a high signal intensity tumor on T1- and T2-weighted images with a thickened septa and nodular lesion that showed low signal intensity. The radiologist suggested the possible differential diagnosis of well-differentiated liposarcoma. At operation, the tumor was found under the iliotibial tract and was not in contact with the knee joint. Histopathologically, this lesion was diagnosed as lipoma arborescens arising in the extra-articular bursa of the knee joint. On MRI, the appearance of lipoma arborescens arising in the extra-articular bursa of the knee joint differed from that of conventional intra-articular lipoma arborescens. In this report, we describe a case of extra-articular lipoma arborescens of the knee joint bursa and discuss the diagnosis and etiology.

引用

页数：4

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