Transcallosal Parafornicial Approach for Third Ventricle Tumors: Neuropsychological Consequences

Abstract Five adult patients with 3rd ventricle tumors underwent a transcallosal intraventricular parafornicial approach. Pre- and postoperative cognitive reviews were conducted on all patients. Each review consisted of: (a) a standardized neuropsychological battery, (b) mental status reviews, (c) specific tests for disconnection, and (d) a personality variable, where possible. Computed tomography and magnetic resonance imaging are also presented. The three patients with colloid cysts and the two with oligodendrogliomas showed no significant postoperative cognitive deficits compared to the preoperative review. These additional subtle neuropsychometric measures, along with the methodological advantage of preoperative review, support a parafornicial approach where indicated to preserve cognitive abilities.

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DIZYGOTIC TWINS WITH A COLLOID CYST OF THE THIRD VENTRICLE

Neurosurgery ◽

10.1227/01.neu.0000330388.91098.89 ◽

2008 ◽

Vol 63 (5) ◽

pp. E1003-E1003 ◽

Cited By ~ 10

Author(s):

Rossana Romani ◽

Mika Niemelä ◽

Miikka Korja ◽

Juha A. Hernesniemi

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Obstructive Hydrocephalus ◽

Third Ventricle ◽

Colloid Cyst ◽

Resonance Imaging ◽

Transcallosal Approach ◽

The Third ◽

Familial Cases ◽

Colloid Cysts

Abstract OBJECTIVE AND IMPORTANCE Colloid cysts of the third ventricle are rare benign tumors of endodermal origin accounting for 1% of all intracranial tumors. Interestingly, a few familial cases have been reported previously. We present the first case of dizygotic twins with a symptomatic colloid cyst of the third ventricle. CLINICAL PRESENTATION A 10-year-old boy was admitted to a local hospital in 1993 because of severe progressive headache. Computed tomographic and magnetic resonance imaging scans revealed acute obstructive hydrocephalus attributable to a third ventricular colloid cyst, which was removed after emergent ventricular drainage. Fourteen years later, a nonidentical twin brother complained of continuous headache with nausea and vomiting. A magnetic resonance imaging scan showed obstructive hydrocephalus and a third ventricle colloid cyst, which was removed by use of the transcallosal approach. INTERVENTION Both twins underwent complete removal of the cyst by the interhemispheric transcallosal approach without postoperative complications. CONCLUSION On the basis of a literature review, 2 cases of colloid cysts of the third ventricle in monozygotic twins and a few familial cases have been reported. Our case is the first in dizygotic twin brothers. These findings suggest that the prevalence of colloid cyst may be higher in twins than in the general population. We believe that the presence of this lesion in a twin necessitates magnetic resonance imaging of the other twin, and a clinical follow-up would be recommended in all other first-degree relatives.

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CT-stereotaxic drainage of colloid cysts in the foramen of Monro and the third ventricle

Journal of Neurosurgery ◽

10.3171/jns.1987.67.2.0220 ◽

1987 ◽

Vol 67 (2) ◽

pp. 220-223 ◽

Cited By ~ 42

Author(s):

Mohsen Mohadjer ◽

Elemer Teshmar ◽

Fritz Mundinger

Keyword(s):

Magnetic Resonance Imaging ◽

Third Ventricle ◽

Major Advance ◽

Resonance Imaging ◽

Foramen Of Monro ◽

Content Type ◽

Safe Method ◽

The Third ◽

Colloid Cysts ◽

Fine Print

✓ Colloid cysts in the foramen of Monro and third ventricle account for 0.5% to 1% of all intracranial space-occupying lesions. The introduction of computerized tomography (CT) and magnetic resonance imaging has represented a major advance in the early detection of these cysts. The risks associated with the management of benign space-occupying lesions by open surgical procedures have made it necessary to search for safer techniques. The CT-stereotaxic method provides a simple, precise, and safe method of puncturing deep-seated space-occupying cysts. Between January, 1979, and December, 1984, 12 patients with colloid cysts in the foramen of Monro and third ventricle were operated on by this method. The operations were successful, and there were no intraoperative or postoperative complications. The advantages of the CT-stereotaxic method are discussed and the results are presented.

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