鼻咽癌放射治疗后颈部复发的二维及彩色多普勒超声表现

The diagnostic value of ultrasonography in neck recurrence after radiotherapy of nasopharyngeal carcinoma

目的 探讨二维及彩色多普勒超声对鼻咽癌放射治疗后颈部复发的诊断价值。方法 分析经针吸细胞学证实的鼻咽癌放射治疗后颈部复发患者 3 1例 ,4 2个肿物的二维超声形态学特点及彩色多普勒血流参数。以鼻咽癌放射治疗后颈部纤维化患者 3 0例 3 4个肿物为对照组。结果 颈部复发灶的内部回声主要为不均匀低回声、边缘多清晰、呈类圆形、彩色多普勒血流分级 ～ 级、峰值血流速度为 18.7cm / s、阻力指数为 0 .62。颈部纤维化肿物以偏强回声为主、边缘模糊、形态不规则、彩色多普勒血流分级 0～ 级、峰值血流速度为 13 .6cm / s、阻力指数为0 .70。两组相比差异有显著性。结论 鼻咽癌放射治疗后颈部复发在二维声像图及彩色多普勒血流动力学上均有特征性表现 。

Objective To evaluate ultrasonography in diagnosis of local tumor recurrence of neck after radiotherapy of nasopharyngeal carcinoma (NPC).Methods Forty two biopsy proven cervical recurrent (RT) masses of 31 cases of NPC after radiotherapy were studied,and their B mode ultrasonography and Color Doppler flow imaging (CDFI) were reviewed .Thirty four masses of postradiation fibrosis (RF) in neck from 30 cases after radiotherapy of NPC were used as controls. Results The shapes of RT masses showed round like features,clear margins and asymmetrical inner echogram,the blood flow parameters showed that the peak systolic velocity (PSV) was 18.7 cm/s,RI was 0.62 and blood flow grade Ⅱ～Ⅲ? The features of RF masses showed irregular, indefinite margins and higher inner echogram, the PVS was 13.6 cm/s, RI was 0.70 and blood flow grade 0～Ⅰ. The blood flow parameters of RT and RF were significantly different. Conclusion The gray scale ultrasonography and CDFI is an important method for differential diagnosis of cervical mass after radiotherapy.\;