巨大な Leptomeningeal Intradural Cyst の一例

抄録

A case of leptomeningeal intradural cysts was reported, which had the length about two thirds of the total spine.
Case: A 12 years old female was admitted on July 24, 1972 to our clinic, complaining of progressively increasing gait disturbance with sensory loss on bilateral lower extremities since about 2 years ago. The most important findindings at admission were spastic paraplegia with sensory level at Th7, hyperactive knee and ankle jerks on both sides, bilateral positive Babinski and no vesical and anal sphincter disturbance.
The plain X-ray films of the thoracic and lumbar spine: There were increasing in the width of the interpediculate space and thinning of pedicles from Th6 to L2, abnormal enlargement of the dural sac below L3 and especially both poles of the cyst with one way valve mechanism.
Operation: Laminectomy of Th4 and Th5, L2 and L3 was performed. Thin walled, long condom-like cysts extending from T5 to L2 and L3 to S3 were found inside the dura on the posterior aspect of the cord. The poles of cysts removed partially.
After surgery, sensory loss disappeared and she became to ambulate in parallel bar.