[Pseudomeningoceles--a rare complication following lumbar intervertebral disk operations].

Pseudomeningoceles arising in connexion with an intervertebral disc operation are a very rare complication in our own material, with an incidence of less than 0.1%. The patients complaints resemble very closely those of an intervertebral disc prolapse, with symptoms of lumbago and lumbo-ischial pain, with, at times, definite root irritation. The diagnosis is usually made, on average 2-3 years after the preceding operation. The myelographic findings confirm the diagnosis, but the introduction of spinal CT is promising for the future. After removal of the meningocele and closure of the dura, complete freedom from symptoms is usually achieved.