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Differential aetiology for the patient's psychiatric decompensation is discussed, including psychosis secondary to a lesion of the midbrain. Literature linking midbrain lesions to psychotic features, such as in peduncular hallucinosis, is briefly reviewed. This case suggests that a midbrain lesion in a susceptible patient may contribute to psychosis.<\/jats:p>","DOI":"10.1136\/bcr-2016-216165","type":"journal-article","created":{"date-parts":[[2016,8,10]],"date-time":"2016-08-10T16:06:44Z","timestamp":1470845204000},"page":"bcr2016216165","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":10,"title":["Peduncular psychosis"],"prefix":"10.1136","volume":"2016","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8025-1525","authenticated-orcid":false,"given":"John Paul","family":"Andrews","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joseph","family":"Taylor","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David","family":"Saunders","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zheala","family":"Qayyum","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2016,8,10]]},"reference":[{"key":"2025042703512767000_2016.aug10_1.bcr2016216165.1","first-page":"1359","article-title":"Syndrome de la calotte du p\u00e9doncule c\u00e9r\u00e9bral. 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