This study aimed to describe the characteristics of superficial desmoid fibromatosis (DF) using two-dimensional and contrast-enhanced ultrasonography, intending to improve diagnostic accuracy. We retrospectively analyzed 19 cases of superficial DF confirmed by surgery or core-needle biopsy in our hospital from January 2018 to August 2020. All patients underwent two-dimensional and contrast-enhanced ultrasound (CEUS) examination. Nineteen patients included 15 women and 4 men, with an average age of 33.37±12.13 years old. The mean size of lesions was 4.78±1.99 cm. On ultrasound, all lesions presented as solitary heterogeneous hypoechoic masses; 13 presented with ill-defined margins. Ten lesions (52.63%) presented with fusiform shapes, and 11 lesions (57.89%) presented with the “fascial tail” sign. CEUS suggested the tumors were hyperenhanced, with an enhanced pattern of rapid wash-in and slow wash-out. Four lesions (21.05%) showed an enlarged scope in the CEUS image compared with the grayscale ultrasound image. In conclusion, an ill-defined heterogeneous hyperechoic appearance with fusiform-shaped and “fascial tail” signs on US and heterogeneous hyperenhancement with an enlarged scope on CEUS are valuable clues in the diagnosis and treatment of superficial DF.

中文翻译：

---

浅表性硬纤维瘤病的超声及增强超声特点：19例系列病例

本研究旨在使用二维和对比增强超声检查描述浅表性硬纤维瘤病 (DF) 的特征，以提高诊断准确性。回顾性分析2018年1月至2020年8月在我院经手术或空心针活检证实的19例浅表性DF。所有患者均接受了二维和增强超声（CEUS）检查。19例患者中女性15例，男性4例，平均年龄33.37±12.13岁。病灶的平均大小为 4.78±1.99 cm。在超声上，所有病变均表现为孤立的不均匀低回声肿块；13 显示边缘不明确。10个病灶（52.63%）呈梭形，11个病灶（57.89%）呈“筋膜尾”征。CEUS 提示肿瘤高增强，具有快速冲入和缓慢冲出的增强模式。与灰度超声图像相比，CEUS 图像中 4 个病灶（21.05%）的范围扩大。总之，超声上呈梭形和“筋膜尾”征的不均匀高回声表现和超声造影上范围扩大的不均匀高回声是诊断和治疗浅表性 DF 的有价值的线索。