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We present 2 rare cases of sellar collision tumors (a 61-year-old male with pituitary adenoma and craniopharyngioma; a 68-year-old female with pituitary adenoma and meningioma of tubercle), clinical features, anamnesis, preoperative neuroimaging, intraoperative picture and postoperative outcomes. Combination of pituitary adenoma and craniopharyngioma\/ meningioma as a type of collision tumors requires caution at all stages of treatment due to impossible preoperative analysis of tumor density and, accordingly, correct choice of surgical access. Transsphenoidal endoscopic access reduces mortality rate according to literature data. Preoperative MR elastometry needs to be studied in depth including patients with sellar collision tumors.<\/jats:p>","DOI":"10.17116\/neiro20258903175","type":"journal-article","created":{"date-parts":[[2025,5,30]],"date-time":"2025-05-30T11:14:06Z","timestamp":1748603646000},"page":"75","source":"Crossref","is-referenced-by-count":3,"title":["Sellar collision tumors: difficulties of preoperative neuroimaging and selection of surgical approach. Case reports and literature review"],"prefix":"10.17116","volume":"89","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0254-4066","authenticated-orcid":false,"given":"M.Yu.","family":"Kurnukhina","sequence":"first","affiliation":[{"name":"Pavlov First St. Petersburg State Medical University","place":["St. Petersburg, Russia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6803-9954","authenticated-orcid":false,"given":"V.Yu.","family":"Cherebillo","sequence":"additional","affiliation":[{"name":"Pavlov First St. Petersburg State Medical University","place":["St. Petersburg, Russia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8594-1533","authenticated-orcid":false,"given":"G.V.","family":"Gavrilov","sequence":"additional","affiliation":[{"name":"Pavlov First St. Petersburg State Medical University","place":["St. Petersburg, Russia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-1749-0604","authenticated-orcid":false,"given":"V.A.","family":"Grachev","sequence":"additional","affiliation":[{"name":"Pavlov First St. Petersburg State Medical University","place":["St. Petersburg, Russia"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"6743","reference":[{"key":"key-10.17116\/neiro20258903175-1","doi-asserted-by":"publisher","DOI":"10.1017\/cjn.2015.301"},{"key":"key-10.17116\/neiro20258903175-2","doi-asserted-by":"publisher","DOI":"10.1093\/neuonc\/nos218"},{"key":"key-10.17116\/neiro20258903175-3","unstructured":"Shibui S. 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