Abstract：
BACKGROUND: Enucleation is a surgical technique to resect peripheral nerve schwannomas. The procedure has a low risk for postoperative deficit, but a small chance for recurrence, because tumor cells may remain inside the pseudocapsule that is left after resection. Magnetic resonance imaging (MRI) scans are frequently performed after surgery to investigate potential residual tumor, but currently there is little information in the literature on the value of follow-up with MRI.
METHODS: All patients who underwent enucleation of a peripheral nerve schwannoma between October 2013 and June 2022 were included. Postoperative MRI scans (gadolinium-enhanced) made at different time points after the surgery were re-examined for residual enhancement. Patients with residual enhancement were contacted to inform whether symptoms had recurred.
RESULTS: A total of 75 schwannoma enucleations in 74 patients were included. The first postoperative MRI scan, performed 3 months after the surgery, showed no residual enhancement in 50 patients. In the remaining 24 patients, another MRI scan was made 1 year after the surgery, which still showed a possible remnant in 11 patients. On the third MRI scan, performed 2 years after enucleation, there were 7 suspected cases (9%). None of these patients had clinical symptoms at a mean postoperative follow-up of 5 years.
CONCLUSIONS: Our data show that the value of postoperative MRI scans after enucleation of peripheral nerve schwannomas is limited, because residual enhancement in the beginning can be non-specific and the small percentage of patients, that persistently had a potential remnant, were all asymptomatic.
METHODS: All patients who underwent enucleation of a peripheral nerve schwannoma between October 2013 and June 2022 were included. Postoperative MRI scans (gadolinium-enhanced) made at different time points after the surgery were re-examined for residual enhancement. Patients with residual enhancement were contacted to inform whether symptoms had recurred.
RESULTS: A total of 75 schwannoma enucleations in 74 patients were included. The first postoperative MRI scan, performed 3 months after the surgery, showed no residual enhancement in 50 patients. In the remaining 24 patients, another MRI scan was made 1 year after the surgery, which still showed a possible remnant in 11 patients. On the third MRI scan, performed 2 years after enucleation, there were 7 suspected cases (9%). None of these patients had clinical symptoms at a mean postoperative follow-up of 5 years.
CONCLUSIONS: Our data show that the value of postoperative MRI scans after enucleation of peripheral nerve schwannomas is limited, because residual enhancement in the beginning can be non-specific and the small percentage of patients, that persistently had a potential remnant, were all asymptomatic.
摘要：
背景：摘除术是一种切除外周神经鞘瘤的手术技术。该手术术后缺陷的风险较低，但是复发的可能性很小，因为肿瘤细胞可能保留在切除后留下的假包膜内。MRI扫描经常在手术后进行，以调查潜在的残留肿瘤，但目前文献中关于MRI随访价值的信息很少.
方法：纳入2013年10月至2022年6月期间接受周围神经神经鞘瘤摘除术的所有患者。在手术后不同时间点进行的术后MRI扫描（钆增强）重新检查残留增强。与残留增强的患者联系以告知症状是否复发。
结果：共纳入74例患者的75例神经鞘瘤摘除术。术后第一次核磁共振扫描,手术后三个月，50例患者无残余增强。在剩下的24名患者中，手术一年后又做了一次核磁共振扫描,在11名患者中仍然显示出可能的残余。在第三次核磁共振扫描中,摘除两年后，有七宗疑似病例(9%)。在平均5年的术后随访中，这些患者均未出现临床症状。
结论：我们的数据表明，周围神经神经鞘瘤摘除术后MRI扫描的价值有限，因为开始时的残余增强可能是非特异性的，并且患者的百分比很小，一直有潜在的残留物，都是无症状的.
方法：纳入2013年10月至2022年6月期间接受周围神经神经鞘瘤摘除术的所有患者。在手术后不同时间点进行的术后MRI扫描（钆增强）重新检查残留增强。与残留增强的患者联系以告知症状是否复发。
结果：共纳入74例患者的75例神经鞘瘤摘除术。术后第一次核磁共振扫描,手术后三个月，50例患者无残余增强。在剩下的24名患者中，手术一年后又做了一次核磁共振扫描,在11名患者中仍然显示出可能的残余。在第三次核磁共振扫描中,摘除两年后，有七宗疑似病例(9%)。在平均5年的术后随访中，这些患者均未出现临床症状。
结论：我们的数据表明，周围神经神经鞘瘤摘除术后MRI扫描的价值有限，因为开始时的残余增强可能是非特异性的，并且患者的百分比很小，一直有潜在的残留物，都是无症状的.
