Arachnoid cyst in a patient with psychosis: Case report |
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Authors: | Joaquim Alves da Silva Alexandra Alves Miguel Talina Susana Carreiro João Guimarães Miguel Xavier |
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Affiliation: | 1.Depart. Psychiatry and Mental Health,Faculty Medical Sciences – UNL Cal?ada da Tapada,Lisbon,Portugal;2.Depart. Psychiatry – Hospital S. Francisco Xavier,Lisbon,Portugal;3.Depart. Neurology, Faculty Medical Sciences – Hospital Egas Moniz,Lisbon,Portugal |
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Abstract: | Background The aetiology of a psychotic disturbance can be due to a functional or organic condition. Organic aetiologies are diverse and encompass organ failures, infections, nutritional deficiencies and space-occupying lesions. Arachnoid cysts are rare, benign space-occupying lesions formed by an arachnoid membrane containing cerebrospinal fluid (CSF). In most cases they are diagnosed by accident. Until recently, the coexistence of arachnoid cysts with psychiatric disturbances had not been closely covered in the literature. However, the appearance of some references that focus on a possible link between arachnoid cysts and psychotic symptoms has increased the interest in this subject and raised questions about the etiopathogeny and the therapeutic approach involved. |
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