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She was treated with intrathecal chemotherapy with improvement in symptoms and resolution of ophthalmoplegia but was left with residual anisocoria and mild ptosis. This presentation (concomitant Horner and ipsilateral ONP) is rare and typically localises to the ipsilateral cavernous sinus, which appeared radiologically normal in this case.<\/jats:p>","DOI":"10.1136\/bcr-2023-258174","type":"journal-article","created":{"date-parts":[[2024,12,15]],"date-time":"2024-12-15T20:30:49Z","timestamp":1734294649000},"page":"e258174","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Pupil sparing oculomotor nerve palsy with concomitant Horner syndrome as a presentation of mantle cell lymphoma relapse"],"prefix":"10.1136","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-5347-1393","authenticated-orcid":false,"given":"Fayad Mustafa Elhadi","family":"Salih","sequence":"first","affiliation":[{"name":"Acute Medicine Unit, University Hospital Southampton, Southampton, Hampshire, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andrew G","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, Blanton Eye Institute, Houston Methodist Hospital, Houston, Texas, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Robert","family":"Ayto","sequence":"additional","affiliation":[{"name":"Haematology Department, Queen Alexandra Hospital, Portsmouth, Hampshire, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nansi","family":"Fashtali","sequence":"additional","affiliation":[{"name":"Radiology Department, Queen Alexandra Hospital, Portsmouth, Hampshire, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2024,12,15]]},"reference":[{"key":"2025082700374470000_17.12.e258174.1","unstructured":"Dreyling M . 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