{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,7]],"date-time":"2026-08-07T17:45:07Z","timestamp":1786124707596,"version":"build-2736575974"},"reference-count":51,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"4","license":[{"start":{"date-parts":[[2018,8,31]],"date-time":"2018-08-31T00:00:00Z","timestamp":1535673600000},"content-version":"vor","delay-in-days":1,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Neurosurg.","NEUROS"],"published-print":{"date-parts":[[2019,10]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>BACKGROUND<\/jats:title>\n                    <jats:p>There is little information on long-term outcomes after salvage treatment by either surgery or stereotactic radiosurgery (SRS) for patients with recurrent\/residual nonfunctioning pituitary adenomas (NFPAs).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>OBJECTIVE<\/jats:title>\n                    <jats:p>To reappraise the efficacy and safety of SRS for patients with NFPAs touching\/compressing the optic apparatus (OA).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>METHODS<\/jats:title>\n                    <jats:p>We studied 27 patients (14 females, 13 males; mean age: 61 [range, 19-85] yr) who underwent SRS between 1998 and 2008 for NFPAs with such condition. The median tumor volume was 4.9 (range, 1.8-50.8) cc. To avoid excess irradiation to the OA, the lower part of the tumor was covered with a 50% or a 60% isodose gradient, ie 49% to 98% (mean, 84%; median, 88%) of the entire tumor received the selected doses. Median doses at the tumor periphery\/OA were 7.6\/11.0 (interquartile range [IQR], 5.8-9.1\/10.1-11.8) Gy.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>RESULTS<\/jats:title>\n                    <jats:p>Seven patients (26%) were confirmed to be deceased due to unrelated diseases at a median post-SRS period of 149 (IQR, 83-158) mo. Follow-up magnetic resonance imaging (MRI) showed tumor growth in 2 patients (7%) at the 11th and 134th post-SRS month; the former underwent surgery and the other SRS. Excluding these 2 patients, the latest follow-up MRI examinations, performed 13 to 238 (median: 168, IQR: 120-180) mo after SRS, showed no size changes in 5 (19%) and shrinkage in 20 (74%) patients. Cumulative incidences of tumor growth control were 96.3% and 91.8% at the 120th and 180th post-SRS month. None of our patients developed subjective symptoms suggesting SRS-induced optic neuropathy or endocrinological impairment.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>CONCLUSION<\/jats:title>\n                    <jats:p>In patients with NFPAs touching\/compressing the OA, SRS achieves good long-term results.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1093\/neuros\/nyy357","type":"journal-article","created":{"date-parts":[[2018,7,14]],"date-time":"2018-07-14T07:38:52Z","timestamp":1531553932000},"page":"476-485","source":"Crossref","is-referenced-by-count":5,"title":["Postsurgical Salvage Radiosurgery for Nonfunctioning Pituitary Adenomas Touching\/Compressing the Optic Chiasm: Median 13-Year Postirradiation Imaging Follow-up Results"],"prefix":"10.1227","volume":"85","author":[{"given":"Masaaki","family":"Yamamoto","sequence":"first","affiliation":[{"name":"Katsuta Hospital Mito GammaHouse, Hitachi-naka, Ibaraki, Japan"},{"name":"Department of Neurosurgery, Tokyo Women's Medical University Medical Center East, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hitoshi","family":"Aiyama","sequence":"additional","affiliation":[{"name":"Katsuta Hospital Mito GammaHouse, Hitachi-naka, Ibaraki, Japan"},{"name":"Department of Neurosurgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takao","family":"Koiso","sequence":"additional","affiliation":[{"name":"Katsuta Hospital Mito GammaHouse, Hitachi-naka, Ibaraki, Japan"},{"name":"Department of Neurosurgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shinya","family":"Watanabe","sequence":"additional","affiliation":[{"name":"Katsuta Hospital Mito GammaHouse, Hitachi-naka, Ibaraki, Japan"},{"name":"Tsukuba Clinical Research and Development Organization, University of Tsukuba, Tsukuba, Ibaraki, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takuya","family":"Kawabe","sequence":"additional","affiliation":[{"name":"Katsuta Hospital Mito GammaHouse, Hitachi-naka, Ibaraki, Japan"},{"name":"Department of Neurosurgery, Rakusai Shimizu Hospital, Kyoto, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yasunori","family":"Sato","sequence":"additional","affiliation":[{"name":"Department of Preventive Medicine and Public Health, Keio University School of Medicine, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yoshinori","family":"Higuchi","sequence":"additional","affiliation":[{"name":"Department of Neurological Surgery, Chiba University Graduate School of Medicine, Chiba, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bierta E","family":"Barfod","sequence":"additional","affiliation":[{"name":"Katsuta Hospital Mito GammaHouse, Hitachi-naka, 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