Abstract：
OBJECTIVE: To analyze the value of ultrasonography in predicting metachronous contralateral inguinal hernia (MCIH) and diagnosing contralateral persistent processus vaginalis (CPPV) in children with unilateral inguinal hernia, a prospective study was conducted.
METHODS: All participants underwent a preoperative ultrasound on the contralateral groin. Patients in group A1 received operating procedure according to ultrasound results (patients with negative contralateral US results received hernia repair on the affected side), and patients in group A2 received operation according to laparoscopic results (patients received hernia repair and CPPV ligation). All patients were followed up 2 years and compared to a historical control (group B) who underwent open hernia repair only on the affected side regardless of contralateral US results.
RESULTS: In groups A1 and A2, laparoscopic exploration revealed the presence of a CPPV in 490 cases. Ultrasound was found to be accurate in 104 out of the 490 cases with four false-positive and 386 false-negative results. This yielded an accuracy of 59.3%, a sensitivity of 21.2%, and a specificity of 99.2%. 10 patients in group A1, and 74 patients in group B developed MCIH. The accuracy, sensitivity, and specificity of the value of ultrasonography in predicting MCIH were 89.3%, 52.4%, and 92.5%, respectively.
CONCLUSIONS: Preoperative ultrasonography of the contralateral groin is currently unable to accurately detect CPPV, but it appears to be a promising method in predicting MCIH by using rigorous diagnosing criteria.
METHODS: All participants underwent a preoperative ultrasound on the contralateral groin. Patients in group A1 received operating procedure according to ultrasound results (patients with negative contralateral US results received hernia repair on the affected side), and patients in group A2 received operation according to laparoscopic results (patients received hernia repair and CPPV ligation). All patients were followed up 2 years and compared to a historical control (group B) who underwent open hernia repair only on the affected side regardless of contralateral US results.
RESULTS: In groups A1 and A2, laparoscopic exploration revealed the presence of a CPPV in 490 cases. Ultrasound was found to be accurate in 104 out of the 490 cases with four false-positive and 386 false-negative results. This yielded an accuracy of 59.3%, a sensitivity of 21.2%, and a specificity of 99.2%. 10 patients in group A1, and 74 patients in group B developed MCIH. The accuracy, sensitivity, and specificity of the value of ultrasonography in predicting MCIH were 89.3%, 52.4%, and 92.5%, respectively.
CONCLUSIONS: Preoperative ultrasonography of the contralateral groin is currently unable to accurately detect CPPV, but it appears to be a promising method in predicting MCIH by using rigorous diagnosing criteria.
摘要：
目的：分析超声对单侧腹股沟疝患儿异时性对侧腹股沟疝（MCIH）和对侧持续阴道突（CPPV）的诊断价值。进行了一项前瞻性研究.
方法：所有参与者都接受了对侧腹股沟的术前超声检查。A1组患者根据超声检查结果进行手术（对侧超声检查结果阴性的患者在患侧接受疝修补术），A2组患者根据腹腔镜检查结果接受手术（患者接受疝修补术和CPPV结扎术）。所有患者均接受了2年的随访，并与仅在患侧进行开放式疝修补术的历史对照组（B组）进行了比较，无论对侧US结果如何。
结果：在A1组和A2组中，腹腔镜探查显示490例存在CPPV。在490例中有104例超声检查准确，其中4例假阳性和386例假阴性结果。这产生了59.3％的准确性，灵敏度为21.2%，和99.2%的特异性。A1组10例，B组74例发生MCIH。准确性,灵敏度,超声对MCIH预测价值的特异性为89.3%,52.4%,92.5%,分别。
结论：对侧腹股沟的术前超声检查目前无法准确检测CPPV，但是通过严格的诊断标准来预测MCIH似乎是一种有前途的方法。
方法：所有参与者都接受了对侧腹股沟的术前超声检查。A1组患者根据超声检查结果进行手术（对侧超声检查结果阴性的患者在患侧接受疝修补术），A2组患者根据腹腔镜检查结果接受手术（患者接受疝修补术和CPPV结扎术）。所有患者均接受了2年的随访，并与仅在患侧进行开放式疝修补术的历史对照组（B组）进行了比较，无论对侧US结果如何。
结果：在A1组和A2组中，腹腔镜探查显示490例存在CPPV。在490例中有104例超声检查准确，其中4例假阳性和386例假阴性结果。这产生了59.3％的准确性，灵敏度为21.2%，和99.2%的特异性。A1组10例，B组74例发生MCIH。准确性,灵敏度,超声对MCIH预测价值的特异性为89.3%,52.4%,92.5%,分别。
结论：对侧腹股沟的术前超声检查目前无法准确检测CPPV，但是通过严格的诊断标准来预测MCIH似乎是一种有前途的方法。
