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Imaging findings were reviewed by two experienced radiologists. BHAG prevalence, locations, associated parenchymal damage (gliosis\/encephalomalacia), and detectability with conventional MRI sequences were assessed. Demographic data and clinical information were also recorded.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>BHAG was identified in 7.3% of cases (51\/695) in the posterior fossa. Patients with BHAG were older than those without (p=0.003), with no gender preference (p=0.259). Cerebellar herniations were most frequent (47.1%), followed by temporal (45.1%) and occipital lobe herniations (17.6%). Parenchymal damage was observed in 25.5% of patients with BHAG. BHAG was undetectable with conventional MRI sequences in 40% of cases.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>BHAG is a common incidental finding in brain MRI and presumably not associated with any symptoms. 3D-DRIVE sequence has a higher sensitivity, particularly with the high-field imaging systems, in the detection of BHAG.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s00234-025-03692-0","type":"journal-article","created":{"date-parts":[[2025,7,8]],"date-time":"2025-07-08T06:20:58Z","timestamp":1751955658000},"page":"3075-3081","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Brain herniation into arachnoid granulations: an underrecognized posterior fossa finding"],"prefix":"10.1007","volume":"67","author":[{"given":"Gozde","family":"Ozer","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Haci Ibrahim","family":"Ekinci","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rasime Pelin","family":"Kavak","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2025,7,8]]},"reference":[{"key":"3692_CR1","doi-asserted-by":"publisher","first-page":"443","DOI":"10.1007\/s00234-016-1662-5","volume":"58","author":"S Malekzadehlashkariani","year":"2016","unstructured":"Malekzadehlashkariani S, Wanke I, R\u00fcfenacht DA, San Mill\u00e1n D (2016) Brain herniations into arachnoid granulations: about 68 cases in 38 patients and review of the literature. 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