{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,31]],"date-time":"2025-10-31T07:18:28Z","timestamp":1761895108549},"reference-count":17,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["PED"],"published-print":{"date-parts":[[2010,7]]},"abstract":"<jats:p>In this report, the authors illustrate the potential shortfalls of early postoperative MR imaging following resection of a posterior fossa tumor. The authors present the cases of a 10-month-old boy and a 14-year-old boy with posterior fossa tumors that were surgically resected and monitored immediately postoperatively with MR imaging. The MR imaging study obtained immediately postresection while the children were still anesthetized revealed enhancing elements in both patients, which were suggestive of leptomeningeal metastases. When this signal was followed on subsequent MR images, it was no longer visible. The patients are both recurrence free at the time of this publication. These cases demonstrate that early postoperative MR imaging findings for leptomeningeal metastases may be unreliable after excision of posterior fossa tumors and may have potential implications for intraoperative MR imaging techniques currently under development.<\/jats:p>","DOI":"10.3171\/2010.4.peds1058","type":"journal-article","created":{"date-parts":[[2010,7,1]],"date-time":"2010-07-01T14:03:48Z","timestamp":1277993028000},"page":"87-91","source":"Crossref","is-referenced-by-count":5,"title":["Cranial magnetic resonance imaging findings of leptomeningeal contrast enhancement after pediatric posterior fossa tumor resection and its significance"],"prefix":"10.3171","volume":"6","author":[{"given":"Jonathan","family":"Loree","sequence":"first","affiliation":[{"name":"Faculty of Medicine and Dentistry, and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vivek","family":"Mehta","sequence":"additional","affiliation":[{"name":"Departments of Neurosurgery and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ravi","family":"Bhargava","sequence":"additional","affiliation":[{"name":"Radiology and Diagnostic Imaging, University of Alberta, Edmonton, Alberta, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1754","reference":[{"key":"b1-0060087","series-title":"Neurobiol Dis","doi-asserted-by":"publisher","first-page":"26","DOI":"10.1016\/j.nbd.2009.07.031","article-title":"The blood-brain barrier and immune function and dysfunction","volume":"37","author":"Banks","year":"2010"},{"key":"b2-0060087","series-title":"Canadian Cancer Statistics 2009","author":"Canadian Cancer Society"},{"key":"b3-0060087","series-title":"United States Cancer Statistics (USCS): 1999\u20132006 Cancer Incidence and Mortality Data","author":"Centers for Disease Control and Prevention National Cancer Institute, North American Association of Central Cancer Registries"},{"key":"b4-0060087","series-title":"Radiology","doi-asserted-by":"publisher","first-page":"93","DOI":"10.1148\/radiology.174.1.2294578","article-title":"Cranial postoperative site: assessment with contrast-enhanced MR imaging","volume":"174","author":"Elster","year":"1990"},{"key":"b5-0060087","series-title":"Br J Neurosurg","doi-asserted-by":"publisher","first-page":"14","DOI":"10.1080\/02688690802610587","article-title":"Intra-operative MRI (iop-MR) for brain tumour surgery","volume":"23","author":"Foroglou","year":"2009"},{"key":"b6-0060087","series-title":"Childs Nerv Syst","doi-asserted-by":"publisher","first-page":"122","DOI":"10.1007\/s00381-002-0709-6","article-title":"Hemicerebellitis mimicking a tumour on MRI","volume":"19","author":"Jabbour","year":"2003"},{"key":"b7-0060087","series-title":"Pediatr Neurosurg","doi-asserted-by":"publisher","first-page":"171","DOI":"10.1159\/000120955","article-title":"Spinal magnetic resonance imaging immediately after craniotomy for detection of metastatic disease","volume":"23","author":"Kaufman","year":"1995"},{"key":"b8-0060087","series-title":"J Neurosurg Pediatr","doi-asserted-by":"publisher","first-page":"330","DOI":"10.3171\/PED\/2008\/1\/4\/330","article-title":"Postoperative hemicerebellar inflammation mimicking recurrent tumor after resection of a medulloblastoma. 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