Division of Pediatric Neurosurgery, Seoul National University Children's Hospital, Seoul, Republic of Korea.
Department of Neurosurgery, Seoul National University College of Medicine, Seoul, Republic of Korea.
Adv Tech Stand Neurosurg. 2023;47:215-223. doi: 10.1007/978-3-031-34981-2_7.
Retained medullary cord (RMC) is a defect resulting from impaired secondary neurulation. Intraoperatively, RMC is recognizable as an elongated cord-like structure caudal to the conus, that contains histologically confirmed neuroglial components and a lumen with an ependymal lining. It characteristically does not possess neurological function. This chapter aims to summarize (1) the mechanisms that lead to the occurrence of RMC; (2) the various forms of RMC, such as cystic RMC and 'possible RMC', and (3) the treatment strategies, especially untethering through limited exposure.
残留髓芯（RMC）是一种由于二次神经管化障碍而导致的缺陷。在手术中，RMC 表现为圆锥末端以下的细长索状结构，包含组织学证实的神经胶质成分和一个具有室管膜衬里的管腔。它通常不具备神经功能。本章旨在总结：（1）导致 RMC 发生的机制；（2）RMC 的各种形式，如囊性 RMC 和“可能的 RMC”；以及（3）治疗策略，特别是通过有限暴露进行松解。
