Flexible endoscopy for management of intraventricular brain tumors in patients with small ventricles

Clinical article

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Object

Endoscopic surgery is generally withheld in patients with small ventricles due to difficulties in ventricular cannulation and intraventricular manipulation. The effectiveness of flexible endoscopy for management of intraventricular brain tumors in patients with small ventricles was evaluated.

Methods

Forty-five patients who underwent endoscopic surgery with a flexible endoscope for intraventricular brain tumors were divided into small-ventricle and ventriculomegaly groups according to the frontal and occipital horn ratio (FOR). Retrospective review of these cases was performed and achievement of surgical goals and morbidity were assessed.

Results

Among the 45 patients, there were 14 with small ventricles and 31 with ventriculomegaly. In the smallventricle group, targeted tumors were located in the suprasellar region in 12 patients and in the pineal region in 2. In the ventriculomegaly group, tumors were located in the pineal region in 15 patients, in the suprasellar region in 9, in the lateral ventricle in 4, in the midbrain in 2, and in the fourth ventricle in 1. In the small-ventricle group, ventricular cannulation was successful and the surgical goals were accomplished in all patients. In ventriculomegaly group, sampling of the tumor was not diagnostic due to intraoperative hemorrhage in 1 patient. There were no significant differences in the rate of achieving the surgical goals or the morbidity between the 2 groups.

Conclusions

Endoscopic surgery using a flexible endoscope is useful for management of intraventricular brain tumors in patients with small ventricles. A flexible endoscope allows excellent maneuverability in introducing the device into the lateral ventricle and manipulating through small ventricles.

Abbreviations used in this paper:EVD = external ventricular drain; FOR = frontal and occipital horn ratio.
Article Information

Contributor Notes

Address correspondence to: Hideki Ogiwara, M.D., Ph.D., Okura 2-10-1, Setagaya-ku, Tokyo 157-8535, Japan. email: hideki_o@d5.dion.ne.jp.Please include this information when citing this paper: published online August 22, 2014; DOI: 10.3171/2014.7.PEDS13648.
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