Sacral perineural cystの1症例

Sacral Perineural Cyst: Report of a case

I．はじめに

　腰・下肢痛の原因としてのsacral cystの報告は，以前より散見されるが，日常診療上診断することは稀である．また報告者により，sacral perineural cust, sacral　extradural cyst, occult intrasacral meningoceleなどと混同して用いている場合も多い．今回われわれは，一過性の右下肢の脱力で発症し，脊髄造影およびCTにてsac—ral cystを認め，手術および組織学的所見より，sacral　perineural cystと診断し得た症例を経験したので報告する．

The presence of cysts within the sacral spinal canal, so-called sacral cysts, is described in literature.

These include 'sacral perineural cyst', 'sacral extradu-ral cyst',' occult intrasacral meningocele' and 'anterior sacral meningocele'. Sacral perineuml cyst in these cys-tic disorders was first described as an incidental auto-psy finding by Tarlov in 1938. Since then, several re-ports have been made describing the sign and symp-tom, neurological findings, roentogenographic diagnosis and cause and origin of the sacral perineural cysts, although many problems are not yet solved satisfactori-ly.