A Case of Charles Bonnet Syndrome After Resection of a Meningioma

Sang Beom Han; Jeong-Min Hwang

doi:10.3341/jkos.2008.49.3.539

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Han and Hwang: A Case of Charles Bonnet Syndrome After Resection of a Meningioma

Original Article

J Korean Ophthalmol Soc 2008;49(3):539-542.

Published online: 7 September 2008

DOI: https://doi.org/10.3341/jkos.2008.49.3.539

A Case of Charles Bonnet Syndrome After Resection of a Meningioma

Sang Beom Han, M.D.^1,², Jeong-Min Hwang, M.D.^1,²

¹Department of Ophthalmology, Seoul National University School of Medicine, Seoul, Korea

²Department of Ophthalmology, Seoul National University Bundang Hospital, Gyeonggi, Korea

Address reprint requests to Jeong-Min Hwang, M.D. Department of Ophthalmology Seoul National University Bundang Hospital, #166 Gumi-ro, Bundang-gu, Seongnam, Gyeonggi-do 463-707, Korea Tel: 82-31-787-7372, Fax: 82-2-741-3187, E-mail: hjm@snu.ac.kr

Received 7 March 2007 Accepted 21 September 2007

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Purpose

To report a case of Charles Bonnet syndrome that developed after resection of a meningioma.

Case summary

The authors reviewed the medical record, brain magnetic resonance image, and Goldmann visual field test of a 56-year-old male patient who was diagnosed with a meningioma in the right parietal and occipital lobe and underwent resection of the tumor. The preoperative Goldmann visual field test showed homonymous left inferior quadrantanopsia. Subtotal resection of the mass in the right parietal and occipital lobe was performed, and postoperative histopathologic examination confirmed the diagnosis of a meningioma. Postoperatively, the patient complained of visual hallucination in an area of the eye with visual field defects. However, his consciousness and orientations were intact, and other cognitive functions were also normal.

Conclusions

Visual hallucination can manifest in an area with visual field defects after resection of abrain tumor. In such a case, a diagnosis of Charles Bonnet syndrome should be considered.

Keywords: Brain tumor, Charles bonnet syndrome, Meningioma, Visual field defect, Visual hallucination

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Figure. 1.

Brain magnetic resonance imaging (A=T1 axial; B=T1 coronal; C=T1 sagittal) showed a large heterogenous mass in the right parietal and occipital lobes.

Figure. 2.

Postoperative Goldmann visual field test showed left inferior homonymous quadrantanopsia (L=left; R=right).

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