J Korean Ophthalmol Soc > Volume 49(3); 2008 > Article
Journal of the Korean Ophthalmological Society 2008;49(3):539-542.
DOI: https://doi.org/10.3341/jkos.2008.49.3.539    Published online March 31, 2008.
A Case of Charles Bonnet Syndrome After Resection of a Meningioma.
Sang Beom Han, Jeong Min Hwang
1Department of Ophthalmology, Seoul National University School of Medicine, Seoul, Korea.
2Department of Ophthalmology, Seoul National University Bundang Hospital, Gyeonggi, Korea.
뇌수막종 절제 후 발생한 찰스보넷증후군 1예
"Department of Ophthalmology, Seoul National University School of Medicine1, Seoul, Korea Department of Ophthalmology, Seoul National University Bundang Hospital2, Gyeonggi, Korea"
Correspondence:  Sang Beom Han, M.D.1,2
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.
Key Words: Brain tumor;Charles bonnet syndrome;Meningioma;Visual field defect;Visual hallucination

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