良性对称性脂肪增多症的声像图特征及超声诊断价值

Sonographic features of benign symmetric lipomatosis and its diagnostic value

目的 探讨良性对称性脂肪增多症的声像图表现.方法 回顾性分析经病理确诊的20例良性对称性脂肪增多症的声像图特征,包括受累部位、边界、包膜、生长方式、内部回声、后方回声、内部钙化、血供等.结果 所有患者均表现为病变部位脂肪蓄积增厚,无包膜,边界不清,大部分左右对称,蓄积脂肪内绝大部分无钙化;病变主要分布于双侧锁骨上窝（3例）,双侧锁骨上窝及颈后区、颈前舌骨下区、胸骨上窝（1例）,颈前舌骨下区（1例）,颈项部（1例）,颈项部与胸背部交界处（1例）,腹股沟区（3例）,双侧腋窝（2例）,右侧肩顶部（1例）,双侧颌下（1例）,左侧胸锁乳突肌区（1例）,双侧乳房（1例）,双侧阴囊壁（1例）,左侧大腿内侧（1例）,右上臂（1例）,右侧腰背脊柱旁（1例）.彩色多普勒检查记录,病变内部血供均为无或稀少.结论 BSL超声声像图具有一定的特征性,超声能清楚显示病变累及的范围,在术前诊断方面具有重要价值.

Objective To evaluate the sonographic features of benign symmetric lipomatosis （ BSL ） . Methods The sonographic characteristics, including the affected area, boundary, capsule, growth pattern, internal echo, posterior echo, calcification, and blood supply, of 20 cases diagnosed with BSL by pathology were retrospectively analyzed. Results Accumulation of nonencapsulated fat tissue of all patients was depicted on sonogram. The fat deposits were ill defined and symmetrical, and most had no calcification within the lipomatous deposits. Fat deposits were predominantly seen in bilateral supraclavicular fossa （ 3 cases ） , bilateral supraclavicular fossa, and anterior part of the neck, infrahyoid region and suprasternal fossa （ 1 case ） , infrahyoid region （ 1 case ） , nape （ 1 case ） , juncture of the nape and chest-back （ 1 case ） , groin area （ 3 cases ） , bilateral axillary fossa （ 2 cases ） , top of right shoulder （ 1 case ） , bilateral submandibular （ 1 case ） , left sternocleidomastoid region （ 1 case ） , bilateral breast （ 1 case ） , bilateral scrotal wall （ 1 case ） , left thigh （ 1 case ） , right upper arm （ 1 case ） , and right back near the spine （ 1 case ） . Color Doppler in the diseased regions showed that there was no or rare blood supply. Conclusions BSL have characteristic sonographic features. Ultrasonography can clearly demonstrate the distribution of fat in the region and has great value in qualitative and quantitative diagnosis in BSL before operation.