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An MRI revealed a 26 \u00d7 32 \u00d7 37 mm lesion in the right petrous apex. The lesion\u2019s signal characteristics were most consistent with a mucocele. We performed an endoscopic endonasal transclival marsupialization and created a wide drainage opening, which we supported by inserting a stent containing mometasone furoate.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>The postoperative course was marked by transient arterial hypertension, which required antihypertensive treatment. Postoperative imaging studies revealed no intracranial complications and confirmed that the drainage pathway remained patent.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>In the differential diagnosis of lesions in the medial portion of the petrous apex, a mucocele should be considered. In appropriately selected cases, endoscopic endonasal marsupialization can be an effective option. To maintain postoperative patency of the drainage pathway, an implant containing mometasone furoate may also be used.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/01455613261486891","type":"journal-article","created":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T16:43:12Z","timestamp":1791564192000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Petrous Apex Mucocele: A Case Report and Literature Review"],"prefix":"10.1177","author":[{"given":"Dimitar","family":"Trifunoski","sequence":"first","affiliation":[{"name":"University Medical Centre Ljubljana"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jure","family":"Urban\u010di\u010d","sequence":"additional","affiliation":[{"name":"University Medical Centre Ljubljana"},{"name":"University of Ljubljana"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tomislav","family":"Felbabi\u0107","sequence":"additional","affiliation":[{"name":"University of Ljubljana"},{"name":"University Medical Centre Ljubljana"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9992-5892","authenticated-orcid":false,"given":"Domen","family":"Vozel","sequence":"additional","affiliation":[{"name":"University Medical Centre Ljubljana"},{"name":"University of Ljubljana"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2026,10,9]]},"reference":[{"key":"e_1_3_5_2_2","doi-asserted-by":"publisher","DOI":"10.1148\/rg.321105758"},{"key":"e_1_3_5_3_2","doi-asserted-by":"publisher","DOI":"10.1259\/bjr\/54160649"},{"key":"e_1_3_5_4_2","doi-asserted-by":"publisher","DOI":"10.2214\/AJR.10.7229"},{"key":"e_1_3_5_5_2","doi-asserted-by":"publisher","DOI":"10.1097\/MOO.0000000000000511"},{"key":"e_1_3_5_6_2","doi-asserted-by":"publisher","DOI":"10.1097\/MAO.0b013e31814b23f0"},{"key":"e_1_3_5_7_2","doi-asserted-by":"publisher","DOI":"10.3389\/fsurg.2022.903578"},{"key":"e_1_3_5_8_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.otc.2014.12.009"},{"issue":"1","key":"e_1_3_5_9_2","first-page":"203","article-title":"Primary mucocele of the petrous apex: MR appearance","volume":"13","author":"Larson TL","year":"1992","unstructured":"Larson TL, Wong ML. 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