Abstract：
Plexiform schwannoma is an uncommon benign tumour that grows in a plexiform pattern. We report a 47-year-old man with a mass on the palmar aspect of the metacarpophalangeal joint of the right index finger that had been growing gradually for more than 10 years. The mass was palpated from the distal carpal tunnel to the ulnar aspect of the proximal interphalangeal joint of the index finger, with tingling and numbness sensation. The tumour was a multinodular tumour involving the first common palmar digital nerve to the ulnar proper palmar digital nerve. It was resected and reconstructed with a sural nerve graft. Plexiform schwannoma is rare in the digital nerve, with only six cases reported. Generally, classic schwannomas can be enucleated without causing neurologic deficits; however, plexiform schwannoma may require nerve resection. There have been reports of recurrence of plexiform schwannoma; definitive resection and long-term follow-up are necessary. Level of Evidence: Level V (Therapeutic).
摘要：
丛状神经鞘瘤是一种罕见的良性肿瘤，呈丛状生长。我们报告了一名47岁的男子，右食指掌指关节掌侧有肿块，该肿块已逐渐增长了10多年。从远端腕管到食指近端指间关节的尺方面触诊肿块，有刺痛和麻木的感觉。肿瘤是多结节肿瘤，涉及尺骨固有掌指神经的第一个掌指神经。切除并用腓肠神经移植物重建。丛状神经鞘瘤在指神经中很少见，报告只有6例。一般来说,典型的神经鞘瘤可以在不引起神经功能缺损的情况下摘除；然而，丛状神经鞘瘤可能需要神经切除。有报告称丛状神经鞘瘤复发；需要明确切除和长期随访。证据等级：V级（治疗）。
