高频超声对鼻咽癌放射治疗后颈部复发的诊断价值

Diagnostic value of high-frequency ultrasound to cervical relapse of postradiation nasopharyngeal carcinoma

目的探讨二维高频超声对鼻咽癌放射治疗后颈部复发的诊断价值。方法选取临床诊断鼻咽癌放射治疗后颈部复发患者40例52个肿物行高频超声检查,另取40例鼻咽癌放射治疗后颈部纤维化患者43个肿物作对比,并与其1周内手术病理或针吸细胞学检查结果对比。结果颈部复发性的内部回声主要为不均匀低回声,边界多清晰,呈类圆形、椭圆形,液化都为液性混合回声,颈部纤维化肿物以偏强回声为主,边缘模糊,形态不规则,绝无液性混合回声,高频超声诊断正确率与病理或细胞学结果相近。结论鼻咽癌放射治疗后颈部复发在二维高频声像图的特征性表现,可作为鉴别其复发和维纤化的重要诊断依据。

Objective To study the diagnostic value of 2-dimensional （2D） high-frequency ultrasound to cervical relapse of nasopharyngeal carcinoma （NPC） after radical radiation. Methods High-frequency ultrasonographic examinations were performed to 52 cervical masses in 40 patients with postradiation nasopharyngeal carcinoma. The control group included 40 postrediation NPC patients with cervical fibrosis and there were 43 fibrous masses. The results were compared to the cytological or histological results within a week. Results The internal echo of the relapsing masses had ultrasonographic characteristics as： nonuniform low level echo, clear bouncary, round or ellipse shape, and fluidity mixing echo if there were colliquation. The internal echo of the fibrous masses had ultrasunographic characteristics as：higher level echo, unclear bouncary, and never with fluidity echo. The accurate rate was similar between high-frequency ultrasound and cytology/histology. Conclusion The cervical relapse of postradiation NPC has special manifestations under 2D high-frequency ultrasound. These characteristics can be important clues when we need to distinguish cervical relapse from fibrosis.