{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T20:04:38Z","timestamp":1791317078976,"version":"4.3.1"},"reference-count":84,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2024,12,28]],"date-time":"2024-12-28T00:00:00Z","timestamp":1735344000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Japan Society for the Promotion of Science","award":["JP 24K12281"],"award-info":[{"award-number":["JP 24K12281"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cancers"],"abstract":"<jats:p>Skull base tumors such as meningiomas and schwannomas are often pathologically benign. However, surgery for these tumors poses significant challenges because of their proximity to critical structures such as the brainstem, cerebral arteries, veins, and cranial nerves. These structures are compressed or encased by the tumor as they grow, increasing the risk of unintended injury to these structures, which can potentially lead to severe neurological deficits. Preoperative imaging is crucial for assessing the tumor size, location, and its relationship with adjacent vital structures. This study reviews advanced imaging techniques that allow detailed visualization of vascular structures and cranial nerves. Contrast-enhanced computed tomography and digital subtraction angiography are optimal for evaluating vascular structures, whereas magnetic resonance imaging (MRI) with high-resolution T2-weighted images and diffusion tensor imaging are optimal for evaluating cranial nerves. These methods help surgeons plan tumor resection strategies, including surgical approaches, more precisely. An accurate preoperative assessment can contribute to safe tumor resection and preserve neurological function. Additionally, we report the MRI contrast defect sign in skull base meningiomas, which suggests cranial nerve penetration through the tumor. This is an essential finding for inferring the course of cranial nerves completely encased within the tumor. These preoperative imaging techniques have the potential to improve the outcomes of patients with skull base tumors. Furthermore, this study highlights the importance of multimodal imaging approaches and discusses future directions for imaging technology that could further develop preoperative surgical simulations and improve the quality of complex skull base tumor surgeries.<\/jats:p>","DOI":"10.3390\/cancers17010062","type":"journal-article","created":{"date-parts":[[2025,1,1]],"date-time":"2025-01-01T13:37:51Z","timestamp":1735738671000},"page":"62","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Preoperative Vascular and Cranial Nerve Imaging in Skull Base Tumors"],"prefix":"10.3390","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0009-0005-7623-4916","authenticated-orcid":false,"given":"Akinari","family":"Yamano","sequence":"first","affiliation":[{"name":"Department of Neurosurgery, Institute of Medicine, University of Tsukuba, Tsukuba 305-8575, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masahide","family":"Matsuda","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Institute of Medicine, University of Tsukuba, Tsukuba 305-8575, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9224-9767","authenticated-orcid":false,"given":"Eiichi","family":"Ishikawa","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Institute of Medicine, University of Tsukuba, Tsukuba 305-8575, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,12,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"671","DOI":"10.1227\/NEU.0000000000000547","article-title":"Facial Nerve Preservation Surgery for Koos Grade 3 and 4 Vestibular Schwannomas","volume":"75","author":"Anaizi","year":"2014","journal-title":"Neurosurgery"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1072","DOI":"10.3171\/2010.2.JNS091118","article-title":"The Role of Radical Microsurgical Resection in Multimodal Treatment for Skull Base Meningioma","volume":"113","author":"Ichinose","year":"2010","journal-title":"J. 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