Sim K B, Wang K C, Cho B K
Division of Pediatric Neurosurgery, Seoul National University Children's Hospital, Korea.
J Korean Med Sci. 1996 Apr;11(2):197-202. doi: 10.3346/jkms.1996.11.2.197.
Terminal myelocystocele is a rare form of occult spinal dysraphism in which the hydromyelic caudal spinal cord and the subarachnoid space are hemiated through a posterior spina bifida. A 1.5 month old boy presented with a large lumbosacral mass and urinary incontinence. The magnetic resonance imaging, operative findings and pathological findings revealed a low lying conus with a dilated central canal dorsally attached to the subcutaneous tissue. Ventral subarachnoid space was enlarged and herniated through the laminar defect of the sacrum. The lesion was typical of a terminal myelocystocele. The clinical features are different from those of myelomeningocele in many aspects. Though the incidence is low, terminal myelocystocele should be included in the differential diagnosis of congenital lesions presenting as a lumbosacral mass.
终末脊髓脊膜膨出是一种罕见的隐性脊柱裂形式，其中积水性脊髓尾段和蛛网膜下腔通过脊柱后裂膨出。一名1.5个月大的男婴出现巨大腰骶部肿块和尿失禁。磁共振成像、手术所见和病理所见显示圆锥低位，中央管扩张，背侧附着于皮下组织。腹侧蛛网膜下腔扩大并通过骶骨椎板缺损处疝出。该病变为典型的终末脊髓脊膜膨出。其临床特征在许多方面与脊髓脊膜膨出不同。尽管发病率较低，但终末脊髓脊膜膨出应纳入表现为腰骶部肿块的先天性病变的鉴别诊断中。
