{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,27]],"date-time":"2025-08-27T06:40:01Z","timestamp":1756276801257,"version":"3.44.0"},"reference-count":16,"publisher":"BMJ","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Reports"],"abstract":"<jats:p>Horner syndrome (HS) results from the interruption of the sympathetic pathway to the eye and face, and describes a collection of signs consisting of ipsilateral miosis, partial ptosis, anhidrosis and apparent enophthalmos. It is a clinical observation, and has a plethora of possible causes, ranging from the benign to the malignant. Involvement of the stellate ganglion on the sympathetic chain by malignant tumours of the lung is a well-recognised cause of HS. On the other hand, HS secondary to the excessive growth of a benign intrathoracic neoplasm is a very rare finding, with only a few cases described in the literature. Our patient was found to have such a diagnosis when he presented to medical attention with a 1-month history of cough that was associated with features of HS that he had ignored for the preceding 9\u2005years.<\/jats:p>","DOI":"10.1136\/bcr-2013-201247","type":"journal-article","created":{"date-parts":[[2013,12,6]],"date-time":"2013-12-06T04:33:31Z","timestamp":1386304411000},"page":"bcr2013201247","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":2,"title":["Intrathoracic schwannoma with Horner syndrome"],"prefix":"10.1136","volume":"2013","author":[{"given":"Paul","family":"Torpiano","sequence":"first","affiliation":[{"name":"Department of Medicine, Mater Dei Hospital, Msida, Malta"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Elaine","family":"Borg","sequence":"additional","affiliation":[{"name":"Department of Pathology, Mater Dei Hospital, Msida, Malta"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paul John","family":"Cassar","sequence":"additional","affiliation":[{"name":"Department of Medicine, Mater Dei Hospital, Msida, Malta"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alexander","family":"Manche\u2019","sequence":"additional","affiliation":[{"name":"Department of Cardiac Services, Mater Dei Hospital, Msida, Malta"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2013,12,6]]},"reference":[{"key":"2025082622585952000_2013.dec06_1.bcr2013201247.1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1444-0938.2007.00177.x"},{"key":"2025082622585952000_2013.dec06_1.bcr2013201247.2","first-page":"111","article-title":"Horner's syndrome from giant schwannoma of the cervical sympathetic chain: case report","volume":"5","author":"Kahraman","year":"2009","journal-title":"B-ENT"},{"key":"2025082622585952000_2013.dec06_1.bcr2013201247.3","first-page":"109","article-title":"Schwannomas of the neck. 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