胎儿隔离肺畸形的产前超声诊断探讨

目的探讨产前超声检查对胎儿隔离肺的诊断价值及临床意义。方法对孕中晚期胎儿行系统性畸形筛查,常规观察双侧肺部回声,有无异常病灶及病灶特征,并用CDFI显示病灶血供来源及内部血流情况,并追踪随访产后病检结果。结果产前诊断的17例隔离肺,经产后病理或影像学检查证实为隔离肺14例胎儿,超声诊断准确率82.4%;误诊3例（2例为肺囊腺瘤,1例隔疝）。其典型声像图特征：胎儿胸腔内或腹腔内强回声或稍强回声团块、呈三角形或叶状,内部回声均匀、边界清,供血动脉来自体循环动脉或其分支。结论产前超声检查是诊断胎儿隔离肺畸形的较准确、可靠的方法,具有重要的临床价值。

Prenatal ultrasound in diagnosis of fetal pulmornary sequestration malformations

Objective To explore the diagnostic value and clinical significance of ultrasonography in the fetal pulmonary sequestration(PS).Methods Fetus in late pregnancy was the line of systematic ultrasonography screening for fetalmalformation.Routinely bilateral lung echo was observed with or without abnormal lesions and lesion characteristics,andlesions with CDFI showed internal blood supply and blood flow.Results There were 14 fetus with PS whose ultrasonography was in conformity with the pathology or imagingstudies,the coincidence rate was 82.4%(14/17),There were: 3 cases who belonged to missed diaghosis(two cases aspulmonary cystadenoma,one case as diaphragmatic hernia).The fetal PS is characterized’by a typical ultrasoundimage of chest or abdominal fetal echogenic mass or slightly stronger echo,triangular or leaf,the internal echouniform,border clearance,and solid strong echo from circulation artery or branch.Conclusion Prenatal ultrasound is amore accurate and reliable method in diagnosis of fetal PS,has important clinical value.