{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T19:18:33Z","timestamp":1787771913943,"version":"build-2784847793"},"reference-count":17,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"1","content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2022,1]]},"abstract":"<jats:sec>\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>\n                      \u201cThirteen-and-a-half\u201d is a newly described clinical syndrome characterized by the combination of the one-and-a-half syndrome with fifth and seventh cranial nerve nuclei involvement (1\n                      <jats:sup>1\/2<\/jats:sup>\n                      + 5 + 7 = 13\n                      <jats:sup>1\/2<\/jats:sup>\n                      ). To the authors' knowledge, this is the first report of the thirteen-and-a-half syndrome secondary to pontine cavernoma and, overall, only the second reported case of this syndrome in the literature till date.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Case Report:<\/jats:title>\n                    <jats:p>A 20-year-old man presented with the clinical features suggestive of the thirteen-and-a-half syndrome, explained radiologically by pontine cavernoma. We operated him using a suboccipital transvermian approach and he is doing well at 2.5 years follow-up. Interestingly, his one-and-a-half syndrome has partially improved to left horizontal gaze palsy.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>The clinical appreciation of the thirteen-and-a-half syndrome precisely localizes the lesion to ipsilateral dorsal pontine tegmentum. Neurosurgeons must be aware of the newly described \u201cone-and-a-half- plus\u201d syndromes as they help in a better understanding of pathoanatomy caused by different disease processes in the brainstem.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.4103\/0028-3886.338728","type":"journal-article","created":{"date-parts":[[2024,2,21]],"date-time":"2024-02-21T00:38:10Z","timestamp":1708475890000},"page":"355-358","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":1,"title":["Thirteen-and-a-half Syndrome Secondary to the Brainstem Cavernoma"],"prefix":"10.4103","volume":"70","author":[{"given":"Jaskaran Singh","family":"Gosal","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Deepak","family":"Khatri","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kuntal Kanti","family":"Das","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sanjog","family":"Gajbhiye","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anant","family":"Mehrotra","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Awadhesh Kumar","family":"Jaiswal","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sanjay","family":"Behari","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","reference":[{"key":"R1-70-20240907","doi-asserted-by":"crossref","first-page":"191","DOI":"10.1097\/WNO.0000000000000341","article-title":"Thirteen-and-a-half syndrome","volume":"36","author":"Allbon","year":"2016","journal-title":"J 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