Kim Ryuh Sup, Kim Young Tae, Choi Jong Min, Shin Sang Hyun, Kim Yeo Ju, Kim Lucia
Department of Orthopaedic Surgery, School of Medicine, Inha University, Incheon, Korea.
Int J Shoulder Surg. 2013 Jul;7(3):116-9. doi: 10.4103/0973-6042.118916.
Lipoma arborescens (LA) is a rare benign lesion of unknown etiology. It is characterized histologically by villous proliferation of the synovial membrane and diffuse replacement of the subsynovial tissue by mature fat cells. This condition affects the knee joint most commonly. Cases involving other locations including glenohumeral joint,[1] hip,[2] elbow,[3] hand[4] and ankle[5] have been rarely described. Involvement of the subdeltoid bursa has also been reported, but to date no case has described LA with osseous/chondroid differentiation of this bursa. Another significant finding in our case was the coexistence of LA with intermuscular lipoma, SLAP lesion and labral cyst.
树枝状脂肪瘤（LA）是一种病因不明的罕见良性病变。其组织学特征为滑膜绒毛状增生以及成熟脂肪细胞弥漫性取代滑膜下组织。这种情况最常累及膝关节。累及其他部位的病例，包括盂肱关节[1]、髋关节[2]、肘关节[3]、手部[4]和踝关节[5]，鲜有报道。三角肌下滑囊受累也有报道，但迄今为止，尚无病例描述该滑囊发生骨/软骨样分化的树枝状脂肪瘤。我们病例中的另一个重要发现是树枝状脂肪瘤与肌间脂肪瘤、SLAP损伤和盂唇囊肿并存。
