Semnic Robert, Simić Radoje, Djuričić Slaviša, Adjić Oto, Vanhoenacker Filip
Srp Arh Celok Lek. 2016 Nov-Dec;144(11-12):650-3.
Lipoma arborescens is a rare, tumor-like lesion commonly involving synovial joints and less commonly bursae and synovial tendon sheaths.
We report a case of a 12-year-old boy with symmetric involvement of the bicipitoradial bursae, synovial sheaths of extensor compartments of both hands and medial ankles. The diagnosis of polyarticular lipoma arborescens was proposed on magnetic resonance (MR) imaging and this diagnosis was histologically proven after biopsy of the bursae and later by open surgery of the synovial sheath of the right ankle tendons. Literature search was performed and twelve cases with polyarticular involvement were analyzed. Lipoma arborescens commonly involves suprapatellar recess of the knee and very rarely other joints or bursae. Histological analysis revealed an accompanying non-necrotizing granulomatous synovial inflammation.
Polyarticular lipoma arborescens is a rare entity and symmetrical involvement of the joints other than the knees is exceedingly rare. MR imaging plays a significant role in the diagnostic protocol, and the characteristic fatty signal on MR imaging is highly suggestive of lipoma arborescens.
树枝状脂肪瘤是一种罕见的肿瘤样病变，通常累及滑膜关节，较少累及滑囊和滑膜腱鞘。
我们报告一例12岁男孩，双侧肱桡滑囊、双手伸肌间隔滑膜鞘及内踝均有对称性受累。磁共振成像（MR）检查提示多关节树枝状脂肪瘤，经滑囊活检及右踝关节腱鞘开放手术，组织学检查证实了该诊断。进行文献检索并分析了12例多关节受累病例。树枝状脂肪瘤通常累及膝关节髌上隐窝，极少累及其他关节或滑囊。组织学分析显示伴有非坏死性肉芽肿性滑膜炎。
多关节树枝状脂肪瘤是一种罕见疾病，膝关节以外的关节对称性受累极为罕见。MR成像在诊断过程中起重要作用，MR成像上的特征性脂肪信号高度提示树枝状脂肪瘤。
