Yamashiro Tsuneo, Yonahara Michiko, Yonaha Ayano, Kinoshita Ryo, Tsubakimoto Maho, Iraha Rin, Murayama Sadayuki
Department of Radiology, Graduate School of Medical Science, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa, 903-0215, Japan.
Department of Ophthalmology, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa, 903-0215, Japan.
Jpn J Radiol. 2015 Dec;33(12):772-5. doi: 10.1007/s11604-015-0494-2. Epub 2015 Oct 27.
Although anomaly of the abducens nerve, including duplication, has been reported in anatomical papers, no radiological report exists regarding a duplicated abducens nerve observed on magnetic resonance (MR) imaging. We encountered a case of bilateral duplication of the abducens nerves, which was found incidentally on MR scans from an 11-year-old boy. He did not have any symptoms of eye movement related to abducens nerve abnormality; thus, the duplication was considered to be a normal variant in this patient. Radiologists should be aware that duplication of the abducens nerve may occur and can be diagnosed on MR, particularly when diagnosing symptomatic patients or as a preoperative assessment for microsurgery of the nerve.
尽管解剖学文献中已报道过展神经异常，包括重复，但尚无关于在磁共振（MR）成像上观察到的重复展神经的放射学报告。我们遇到了一例11岁男孩，其在MR扫描中偶然发现双侧展神经重复。他没有任何与展神经异常相关的眼球运动症状；因此，在该患者中，这种重复被认为是一种正常变异。放射科医生应意识到展神经可能会出现重复，并且可以通过MR进行诊断，尤其是在诊断有症状的患者或作为该神经显微手术的术前评估时。
