Urigo Carlo, Schenkel Marie Claude, Assal Mathieu, Bianchi Stefano
Studio Radiologico Urigo, Sassari, Italy.
CIM SA Cabinet Imagerie Medicale, Route de Malagnou 40a, Geneva, Switzerland.
Skeletal Radiol. 2017 Apr;46(4):565-569. doi: 10.1007/s00256-017-2575-z. Epub 2017 Feb 11.
We report a case of desmoplastic fibroblastoma (DF) of the foot in a 65-year-old woman. The tumor presented as a slow-growing, painless mass located in the first intermetatarsal space of the right foot. Ultrasound showed a well-circumscribed hypoechoic lesion containing hyperechoic calcifications confirmed on standard radiographs. At magnetic resonance imaging (MRI), the mass appeared isointense to the muscles on T1-weighted (T1W) images, hyperintense on proton-density-weighted fat-saturated images, and presented scattered internal hypointense foci. Post-contrast T1W spectral presaturation with inversion recovery (SPIR) images showed heterogeneous, mostly peripheral, contrast enhancement. DF must be considered in the differential diagnosis of soft-tissue calcified tumors of the foot.
我们报告了一例65岁女性足部促纤维增生性纤维瘤（DF）的病例。肿瘤表现为生长缓慢、无痛的肿块，位于右足第一跖骨间隙。超声显示一个边界清晰的低回声病变，其中含有在标准X线片上得到证实的高回声钙化。在磁共振成像（MRI）中，肿块在T1加权（T1W）图像上与肌肉呈等信号，在质子密度加权脂肪抑制图像上呈高信号，并呈现散在的内部低信号灶。对比剂增强后的T1W频谱预饱和反转恢复（SPIR）图像显示不均匀、主要为周边的对比剂强化。在足部软组织钙化性肿瘤的鉴别诊断中必须考虑到DF。
