Glover McKinley, Chebib Ivan, Simeone F Joseph
Department of Musculoskeletal Imaging, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA,
Skeletal Radiol. 2014 May;43(5):681-6. doi: 10.1007/s00256-013-1749-6. Epub 2013 Oct 26.
Fibroma of the tendon sheath, a rare benign soft tissue tumor that most often occurs in the distal upper extremities (hands and wrist), is exceedingly rare to present as an intraarticular mass. Presented here is the first case in the English literature, to our knowledge, of a fibroma of the tendon sheath arising in the acromioclavicular joint. The patient presented with recurrent shoulder pain with activity without antecedent trauma. Radiographs were essentially normal. MR images demonstrated a lobulated, heterogeneous mass with contrast enhancement arising from the acromioclavicular joint. Following surgical resection, histopathology revealed hypocellular collagen matrix with spindle-shaped fibroblasts, confirming the diagnosis of fibroma of tendon sheath. The imaging features of the fibroma of the tendon sheath and a brief review of the literature are presented.
腱鞘纤维瘤是一种罕见的良性软组织肿瘤，最常发生于上肢远端（手和腕部），极少表现为关节内肿块。据我们所知，本文报道的是英文文献中首例发生于肩锁关节的腱鞘纤维瘤病例。该患者在无既往创伤史的情况下，活动时反复出现肩部疼痛。X线片基本正常。磁共振成像（MR）显示肩锁关节处有一个分叶状、不均匀的肿块，有对比增强。手术切除后，组织病理学显示为含有梭形成纤维细胞的低细胞胶原基质，确诊为腱鞘纤维瘤。本文介绍了腱鞘纤维瘤的影像学特征并对文献进行了简要回顾。
