Vivitmongkonchai Koakait, Wangcharoenrung Dearada, Kintarak Jutatip
J Med Assoc Thai. 2016 Jul;99 Suppl 4:S69-74.
To describe the sonographic appearance of soft tissue lipomas with pathological correlation.
Patients presenting with clinically palpable soft tissue masses who underwent ultrasound examination and excision with documentary pathological diagnosis of lipomas were collected for this retrospective study. Institutional review board approval was obtained and informed consent was waived. All sonographic images were reviewed by musculoskeletal radiologist and resident in consensus. The sonographic findings were recorded and analyzed. The available pathologic slices were reviewed by pathologist.
Fifty-two pathologically documented lipomas were available. Four patterns of sonographic appearance of the softtissue lipomas were categorized. The most common pattern was well-organized, heterogeneous echogenicity with multiple clearly defined long smooth continuous internal echogenic lines parallel to the long axis of the lesions. The second pattern was disorganized heterogeneous mixed hypo- and hyper-echogenicity with some irregular, interrupted, internal echogenic lines. The third pattern showed disorganized heterogeneous hyper-echoic mass with some irregular, interrupted internal echogenic lines. The last pattern was rather homogeneous echogenic mass with short interrupted, irregular internal echogenic lines. There were available pathological slices for review in 29 lesions, which were distributed among all four sonographic categories. These lipomas showed variable fibrous and vascular components without atypical cell or myxoid component. There are no distinct histological features in any of the four groups.
The soft tissue lipomas contain some internal echogenic lines parallel to the long axis of the masses. The sonographic appearances of the lipomas are variable and no distinct histological correlation is identified.
描述伴有病理对照的软组织脂肪瘤的超声表现。
收集临床上可触及软组织肿块并接受超声检查及切除，且病理诊断为脂肪瘤的患者进行这项回顾性研究。获得了机构审查委员会的批准并免除了知情同意。所有超声图像由肌肉骨骼放射科医生和住院医师共同审查。记录并分析超声检查结果。病理学家对可用的病理切片进行审查。
有52例经病理证实的脂肪瘤。软组织脂肪瘤的超声表现分为四种类型。最常见的类型是结构规整，回声不均匀，有多个清晰界定的长而平滑连续的内部回声线，与病变的长轴平行。第二种类型是结构紊乱的不均匀混合低回声和高回声，有一些不规则、中断的内部回声线。第三种类型是结构紊乱的不均匀高回声肿块，有一些不规则、中断的内部回声线。最后一种类型是回声相当均匀的肿块，有短的、中断的、不规则的内部回声线。29个病变有可用的病理切片供审查，这些病变分布在所有四种超声类型中。这些脂肪瘤显示出不同的纤维和血管成分，无非典型细胞或黏液样成分。这四组中均无明显的组织学特征。
软组织脂肪瘤含有一些与肿块长轴平行的内部回声线。脂肪瘤的超声表现多样，未发现明显的组织学相关性。
