Haber H P, Warmann S W, Fuchs J
Klinik für Kinder- und Jugendmedizin, Universitätsklinikum Tübingen.
Ultraschall Med. 2008 Aug;29(4):383-7. doi: 10.1055/s-2007-963454. Epub 2008 Jun 5.
To evaluate the usefulness of transperineal sonography of the anal sphincter complex for differentiating between an anteriorly displaced anus, which is a normal anatomical variant, and a low-type imperforate anus with perineal fistula, which is a pathological developmental abnormality requiring surgical repair.
Transperineal sonography was performed with a 13-MHz linear-array transducer on 8 infants (1 day-5.3 months old) who were considered on clinical grounds to have an anteriorly displaced anus and on 9 infants (0-8 months old) with a low-type imperforate anus and perineal fistula confirmed at surgery. The anal sphincter complex was identified and the relationship between the anal canal and the anal sphincter complex was evaluated.
Transperineal sonography was feasible for all children without any specific preparation. An anal canal running within an intact sphincter complex was identified in all infants with an anteriorly displaced anus (n = 8). In 8 of 9 infants with a low-type imperforate anus, a perineal fistula running outside the anal sphincter complex was correctly diagnosed by transperineal sonography. In one infant with a low-type imperforate anus, transperineal sonography revealed a deficient anal sphincter complex.
Transperineal sonography appears to be a useful non-invasive imaging technique for assessing congenital anorectal abnormalities in neonates and infants, allowing the surgeon to select infants who would benefit from surgical repair.
评估经会阴超声检查肛门括约肌复合体对于鉴别正常解剖变异的肛门前移与低位无肛合并会阴瘘（一种需要手术修复的病理性发育异常）的实用性。
使用13兆赫线阵探头对8例临床诊断为肛门前移的婴儿（年龄1天至5.3个月）和9例手术确诊为低位无肛合并会阴瘘的婴儿（年龄0至8个月）进行经会阴超声检查。识别肛门括约肌复合体并评估肛管与会阴括约肌复合体之间的关系。
所有儿童无需特殊准备即可进行经会阴超声检查。所有肛门前移的婴儿（n = 8）均可见肛管位于完整的括约肌复合体内。9例低位无肛婴儿中的8例，经会阴超声正确诊断出会阴瘘位于肛门括约肌复合体之外。1例低位无肛婴儿经会阴超声显示肛门括约肌复合体发育不全。
经会阴超声似乎是评估新生儿和婴儿先天性肛肠异常的一种有用的非侵入性成像技术，有助于外科医生选择适合手术修复的婴儿。
