高频彩色多普勒超声诊断肛周脓肿及肛瘘的临床价值

Clinical Value of High Frequency Color Doppler Ultrasound in the Diagnosis of Perianal Abscess and Anal Fis- tula

回顾分析高频彩色多普勒超声诊断肛周脓肿及肛瘘的临床价值。应用5～10MHz的高频探头，对51例肛周脓肿及肛瘘患者在肛门周围进行超声检测。结果显示，肛周脓肿形成前期6例，脓肿形成期45例，伴肛瘘17例，肛周脓肿诊断符合率100％；合并单纯性肛瘘者诊断符合率91％；复杂性肛瘘诊断符合率67％。脓肿不同时期声像图各有不同特点。经高频彩色超声波检查肛周脓肿和肛瘘声像图表现为低回声、无回声或混合回声区，病灶区域未测及明显血流信号，扫查病灶周缘区可发现瘘管的走行、数目及瘘口位置。结果表明，高频彩色多普勒超声可以较确切诊断不同发展阶段的肛周脓肿及肛瘘位置、形态、走行，并且可以指导临床治疗。

A retrospective study was carried out on the clinical value of high frequency color doppler ultra- sound in the diagnosis of perianal abscess and anal fistula. A high frequency probe of 5-10MHz was used for anus ultrasonic testing 51 cases with perianal abscess and anal fistula. The results showed that 6 cases with perianal abscess were in early stage of abscess formation,45 in the stage of abscess formation, 17 combined with anal fistula;the coincidence rate of ultrasounic findings with diagnosis of perianal abscess was 100~, combined simple anal fistula, 91~ and complex anal fistula, 67~. The sonogram demonstrated different characteristics in different stages.,For perianal abscess and anal fistula,high frequency color doppler ultra- sonic testing and sonogram demonstrated hypoechoic, anechoic or mixed echo areas; apparent blood flow signals was not detected in lesion areas;through ultrasonic testing fistula trend as well as its number and location of fistula opening can be found at the periphery of lesions. It is concluded that high frequency color doppler ultrasound can be used in diagnosing perianal abscess in different stages, as well as the location, shape and trend of the anal fistula,and guide clinical practice.