Article
Endoscopic treatment of arachnoid cysts: experience with 32 cases
Die endoskopische Behandlung von Arachnoidalzysten: Erfahrungen mit 32 Fällen
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Published: | May 8, 2006 |
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Objective: The optimal treatment of arachnoid cysts remains controversial. The authors employ since 1993 an endoscopic approach. Here the results with this approach are presented.
Methods: Between April 1993 and October 2005, 29 patients (2 males, 9 females, mean age 26 yrs [range 3 weeks – 74 yrs]) received 32 endoscopic operations for an arachnoid cyst. All patients were prospectively followed.
Results: Twenty-one cysts were located in the temporal lobe, 6 perisellar, and 2 in the foramen magnum. An endoscopic cystocisternostomy was performed in 23, a ventriculocystostomy in 4, a ventriculocystocisternostomy in 4, and no stomy in 1. The mean surgical time scored 86 min (range 35 - 150 min). The mean follow-up period was 16 months (range 1 week – 48 months). Complications consisted of 1 CSF fistula, 2 meningitides, 1 transient trochlear nerve palsy, 1 transient oculomotor nerve palsy, 1 permanent diabetes insipidus, and 1 epidural hematoma. Endoscopic revisions for stomy closure had to be performed in 3 cases. After surgery 24 patients became symptom free, 7 improved, and 1 remained unchanged. On MRI, the arachnoid cyst decreased in 21 and remained unchanged in 11. There was CSF flow through the stomy in 11 of 13 cases studied.
Conclusions: In all, the endoscopic approach can be considered safe and successful for arachnoid cyst treatment. However, a longer follow-up is required before definitive conclusions can be drawn.