Hocar O, Buffard V, Ortonne N, Bagot M
Service de dermatologie, hôpital Henri-Mondor, Créteil, France.
Ann Dermatol Venereol. 2012 Jan;139(1):41-5. doi: 10.1016/j.annder.2011.10.395. Epub 2011 Dec 6.
Elastofibroma dorsi (EFD) is a rare form of benign soft-tissue tumour that is almost always located at the lower pole of the scapula, deep to the serratus anterior muscle. There are few reports in the dermatological literature since it rarely develops in skin or subcutaneous tissue.
We present the case of a 59-year-old man with bilateral elastofibroma dorsi. Physical examination showed two bilateral scapular masses, better visualized in abduction or antepulsion. They were firm, painless, mobile, covered by normal skin, and measured 40/35 mm on the right and 50/55 mm on the left. Ultrasound of soft tissue and a chest CT scan showed two heterogeneous masses (tissue and fat) within the serratus anterior muscle measuring 30/15 mm on the right and 60/19 mm on the left. Histopathological study of a deep biopsy done on the right helped to confirm the diagnosis of EFD. Tumour resection was done on the right.
Elastofibroma dorsi is an uncommon, benign, non-encapsulated pseudo-tumour occurring in connective tissue of the infrascapular region of elderly patients. Another mass must be sought in all cases in the corresponding contralateral site since this form of tumour is often bilateral.
EFD must be considered in the differential diagnosis of shoulder masses in elderly patients.
背部弹力纤维瘤（EFD）是一种罕见的良性软组织肿瘤，几乎总是位于肩胛骨下角，在锯齿肌深层。由于它很少在皮肤或皮下组织中发生，皮肤病学文献中的报道很少。
我们报告一例59岁双侧背部弹力纤维瘤男性患者。体格检查发现双侧肩胛部有肿块，在外展或前推时更易观察到。肿块质地坚硬、无痛、可活动，表面覆盖正常皮肤，右侧大小为40/35毫米，左侧为50/55毫米。软组织超声和胸部CT扫描显示，锯齿肌内有两个不均匀的肿块（组织和脂肪），右侧大小为30/15毫米，左侧为60/19毫米。对右侧进行的深部活检组织病理学研究有助于确诊EFD。对右侧进行了肿瘤切除术。
背部弹力纤维瘤是一种罕见的、良性的、无包膜的假肿瘤，发生于老年患者肩胛下区域的结缔组织。由于这种肿瘤常为双侧性，所有病例均须在对侧相应部位寻找另一个肿块。
在老年患者肩部肿块的鉴别诊断中必须考虑EFD。
