{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,20]],"date-time":"2026-08-20T15:32:14Z","timestamp":1787239934180,"version":"build-2736575974"},"reference-count":15,"publisher":"Termedia Sp. z.o.o.","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Pol J Radiol"],"abstract":"\n Introduction<\/jats:title>\n The tent shape of the tentorium cerebelli helps preserve brain anatomy by providing cerebellum protection against pressure caused by the brain\u2019s gravity effect. In the absence of this support structure of the tentorium, herniation occurs in the brain. Isolated tentorial hypoplasia (TH) is extremely rare. In this study, we aimed to calculate the prevalence of this entity, which is reported to be rare in the literature.<\/jats:p>\n <\/jats:sec>\n \n Material and methods<\/jats:title>\n Magnetic resonance imaging (MRI) images of 5163 patients who applied to the training and research hospital for various reasons between 1 September 2020, and 31 August 2021, who underwent brain MRI, were reviewed retrospectively.<\/jats:p>\n <\/jats:sec>\n \n Results<\/jats:title>\n The prevalence of TH among patients screened during a period of one year was calculated as 2.22%. Of these, 76.59% were female (n = 72) and 23.41% were male (n = 22). The rates of presentation of complaints among TH patients were 60.63% headache, 17.02% vertigo, 4.25% seizures, 3.19% tremor, 3.19% syncope, 7.44% forgetfulness, and 2.12% visual impairment. Five patients (11.76%) were admitted for metastasis investigation due to their primary malignancy; they did not have any complaints. Localization of TH: 18.08% (n = 17) were observed on the right side, 28.72% (n = 27) on the left side, and 53.19% (n = 50) on the bilateral tentorium leaf.<\/jats:p>\n <\/jats:sec>\n \n Conclusions<\/jats:title>\n Being aware of TH during brain MRI evaluation will help prevent possible misdiagnoses. We hope that this study with a large number of patients will increase awareness about TH, because there are no studies other than cadaver studies and a few case reports.<\/jats:p>\n <\/jats:sec>","DOI":"10.5114\/pjr.2022.119483","type":"journal-article","created":{"date-parts":[[2022,9,15]],"date-time":"2022-09-15T03:37:50Z","timestamp":1663213070000},"page":"506-509","source":"Crossref","is-referenced-by-count":7,"title":["The prevalence of isolated tentorial hypoplasia on magnetic resonance imaging"],"prefix":"10.5114","volume":"87","author":[{"given":"\u00d6zkan","family":"\u00dcnal","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Halil \u0130brahim","family":"\u015eara","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"3061","published-online":{"date-parts":[[2022,9,12]]},"reference":[{"key":"ref-1152641","first-page":"e3079","article-title":"The tentorium cerebelli: a comprehensive review including its anatomy, embryology, and surgical techniques","volume":"10","author":"Rai R","year":"2018","unstructured":"Rai R, Iwanaga J, Shokouhi G, et al. The tentorium cerebelli: a comprehensive review including its anatomy, embryology, and surgical techniques. Cureus 2018; 10: e3079.","journal-title":"Cureus"},{"key":"ref-1152642","doi-asserted-by":"crossref","first-page":"827","DOI":"10.1007\/s00381-012-1744-6","article-title":"The cranial dura mater: a review of its history, embryology, and anatomy","volume":"28","author":"Adeeb N","year":"2012","unstructured":"Adeeb N, Mortazavi MM, Tubbs RS, et al. The cranial dura mater: a review of its history, embryology, and anatomy. Childs Nerv Syst 2012; 28: 827-837.","journal-title":"Childs Nerv Syst"},{"key":"ref-1152643","doi-asserted-by":"crossref","first-page":"635","DOI":"10.1002\/ar.1091600312","article-title":"The comparative anatomy and phylogeny of the tentorium cerebelli","volume":"160","author":"Klintworth GK","year":"1968","unstructured":"Klintworth GK. The comparative anatomy and phylogeny of the tentorium cerebelli. Anat Rec 1968; 160: 635-642.","journal-title":"Anat Rec"},{"key":"ref-1152644","doi-asserted-by":"publisher","DOI":"10.18535\/jmscr\/v8i1.55"},{"key":"ref-1152645","doi-asserted-by":"crossref","first-page":"131","DOI":"10.1097\/01.rct.0000189592.64069.d5","article-title":"Isolated hypoplasia of the tentorium","volume":"30","author":"Abi-Jaoudeh N","year":"2006","unstructured":"Abi-Jaoudeh N, Chevrette E. Isolated hypoplasia of the tentorium. J Comput Assist Tomogr 2006; 30: 131-134.","journal-title":"J Comput Assist Tomogr"},{"key":"ref-1152646","first-page":"155","article-title":"Hypoplasia of the tentorium with pseudohernia of the occipital lobe into the posterior cranial fossa","volume":"18","author":"Gund A","year":"1976","unstructured":"Gund A. Hypoplasia of the tentorium with pseudohernia of the occipital lobe into the posterior cranial fossa. Mod Probl Paediatr 1976; 18: 155-157.","journal-title":"Mod Probl Paediatr"},{"key":"ref-1152647","doi-asserted-by":"crossref","first-page":"974","DOI":"10.1007\/s42399-020-00342-9","article-title":"Tentorium and straight sinus hypoplasia in a child: a case report","volume":"2","author":"Bernardo K","year":"2020","unstructured":"Bernardo K, Roychowdhury S, Bhise V. Tentorium and straight sinus hypoplasia in a child: a case report. SN Comprehensive Clinical Medi-cine 2020; 2: 974-977.","journal-title":"SN Comprehensive Clinical Medi-cine"},{"key":"ref-1152648","doi-asserted-by":"crossref","first-page":"79","DOI":"10.1212\/CPJ.0000000000000420","article-title":"MR and diffusion tensor imaging of isolated tentorial hypoplasia","volume":"8","author":"Sun Y","year":"2018","unstructured":"Sun Y, Bobra S, Kurian Ch, et al. MR and diffusion tensor imaging of isolated tentorial hypoplasia. Neurology. Clin Pract 2018; 8: 79-81.","journal-title":"Neurology. Clin Pract"},{"key":"ref-1152649","doi-asserted-by":"crossref","first-page":"124","DOI":"10.2176\/nmc.40.124","article-title":"Trigeminal neuralgia associated with tentorial agenesis and temporal lobe herniation\u2013case report","volume":"40","author":"Tanaka T","year":"2000","unstructured":"Tanaka T, Nakazaki H, Hida T, et al. Trigeminal neuralgia associated with tentorial agenesis and temporal lobe herniation\u2013case report. Neurol Med Chir (Tokyo) 2000; 40: 124-127.","journal-title":"Neurol Med Chir (Tokyo)"},{"key":"ref-1152650","first-page":"96","article-title":"Tentorium hypoplasia with partial occipital lobe herniation","volume":"98","author":"Thomaere E","year":"2015","unstructured":"Thomaere E, Schepers S, Termote B, et al. Tentorium hypoplasia with partial occipital lobe herniation. JBR-BTR 2015; 98: 96.","journal-title":"JBR-BTR"},{"key":"ref-1152651","doi-asserted-by":"crossref","first-page":"863","DOI":"10.1097\/00004728-199109000-00031","article-title":"Focal hypoplasia of the tentorium with temporal lobe herniation: CT demonstration","volume":"15","author":"Tanohata K","year":"1991","unstructured":"Tanohata K, Okoshi T, Iwasawa T. Focal hypoplasia of the tentorium with temporal lobe herniation: CT demonstration. J Comput Assist Tomogr 1991; 15: 863-864.","journal-title":"J Comput Assist Tomogr"},{"key":"ref-1152652","doi-asserted-by":"crossref","first-page":"1103","DOI":"10.3171\/jns.2002.96.6.1103","article-title":"The tentorial notch: anatomical variation, morphometric analysis, and classification in 100 human autopsy cases","volume":"96","author":"Adler DE","year":"2002","unstructured":"Adler DE, Milhorat TH. The tentorial notch: anatomical variation, morphometric analysis, and classification in 100 human autopsy cases. J Neurosurg 2002; 96: 1103-1112.","journal-title":"J Neurosurg"},{"key":"ref-1152653","doi-asserted-by":"crossref","first-page":"279","DOI":"10.1136\/jnnp.21.4.279","article-title":"Individual variation in the size of the tentorial opening","volume":"21","author":"Corsellis JA","year":"1958","unstructured":"Corsellis JA. Individual variation in the size of the tentorial opening. J Neurol Neurosurg Psychiatry 1958; 21: 279-283.","journal-title":"J Neurol Neurosurg Psychiatry"},{"key":"ref-1152654","doi-asserted-by":"crossref","first-page":"402","DOI":"10.3171\/jns.1983.58.3.0402","article-title":"Developmental defects of the tentorium cerebelli","volume":"58","author":"Bisaria KK","year":"1983","unstructured":"Bisaria KK. Developmental defects of the tentorium cerebelli. J Neurosurg 1983; 58: 402.","journal-title":"J Neurosurg"},{"key":"ref-1152655","doi-asserted-by":"publisher","DOI":"10.1117\/12.2255640"}],"container-title":["Polish Journal of Radiology"],"original-title":[],"link":[{"URL":"https:\/\/www.polradiol.com\/pdf-150741-108996","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.polradiol.com\/pdf-150741-108996","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,5,22]],"date-time":"2024-05-22T07:29:42Z","timestamp":1716362982000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.polradiol.com\/The-prevalence-of-isolated-tentorial-hypoplasia-on-magnetic-resonance-imaging,150741,0,2.html"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,9,12]]},"references-count":15,"alternative-id":["150741"],"URL":"https:\/\/doi.org\/10.5114\/pjr.2022.119483","relation":{},"ISSN":["1899-0967"],"issn-type":[{"value":"1899-0967","type":"print"}],"subject":[],"published":{"date-parts":[[2022,9,12]]}}}