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A positron emission tomography-CT scan identified abnormal subcarinal nodes, shown on biopsy to be metastatic small cell lung cancer. He is currently undergoing treatment with chemotherapy and radiotherapy.<\/jats:p>","DOI":"10.1136\/practneurol-2017-001819","type":"journal-article","created":{"date-parts":[[2018,2,13]],"date-time":"2018-02-13T20:25:55Z","timestamp":1518553555000},"page":"146-150","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":6,"title":["Trismus caused by paraneoplastic brainstem encephalitis"],"prefix":"10.1136","volume":"18","author":[{"given":"Naveed","family":"Malek","sequence":"first","affiliation":[{"name":"Department of Neurology, Ipswich Hospital NHS Trust, Ipswich, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maxwell","family":"Damian","sequence":"additional","affiliation":[{"name":"Department of Neurology, Ipswich Hospital NHS Trust, Ipswich, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2018,2,13]]},"reference":[{"key":"2025090411263516000_18.2.146.1","doi-asserted-by":"crossref","first-page":"355","DOI":"10.11607\/ofph.1703","article-title":"Trismus as a clinical manifestation of tetanus: a case report","volume":"30","author":"Papadiochos","year":"2016","journal-title":"J Oral Facial Pain Headache"},{"key":"2025090411263516000_18.2.146.2","first-page":"1","article-title":"Spontaneous nosocomial pseudomonas aeruginosa meningitis presenting as trismus","volume":"2017","author":"Parr","year":"2017","journal-title":"Case Rep Infect Dis"},{"key":"2025090411263516000_18.2.146.3","doi-asserted-by":"publisher","DOI":"10.1056\/NEJMra023009"},{"key":"2025090411263516000_18.2.146.4","doi-asserted-by":"publisher","DOI":"10.1136\/jnnp.2003.034447"},{"key":"2025090411263516000_18.2.146.5","doi-asserted-by":"crossref","first-page":"201","DOI":"10.1007\/s11940-013-0221-1","article-title":"Paraneoplastic brain stem encephalitis","volume":"15","author":"Blaes","year":"2013","journal-title":"Curr Treat Options Neurol"},{"key":"2025090411263516000_18.2.146.6","doi-asserted-by":"crossref","first-page":"213","DOI":"10.5114\/ceji.2017.69365","article-title":"Limbic encephalitis - 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