Observer Agreement Regarding the Necessity of Retreatment of Previously Coiled Recurrent Cerebral Aneurysms
Open Access
- 20 January 2011
- journal article
- Published by American Society of Neuroradiology (ASNR) in American Journal of Neuroradiology
- Vol. 32 (3), 566-569
- https://doi.org/10.3174/ajnr.a2336
Abstract
SUMMARY: The frontal process of the maxilla occasionally shows a localized FD-like appearance. The purpose of this study was to determine its prevalence and findings on CT. A retrospective study of 1000 consecutive paranasal sinus CT scans was preformed on outpatients without a history of trauma or previous surgery in our hospital during 6 months. CT images were interpreted independently by 2 experienced head and neck radiologists on a PACS system in a bone window setting. Of the 1000 patients (546 males; 454 females), 51 (5.1%,41 males and 10 females) had an FD-like appearance in the frontal process of the maxilla. There was a statistically significant difference between sexes (P < .001). Twenty-nine (56.9%) entities arose from the right frontal process and 22 (43.1%) from the left frontal process. These entities, with well-defined margins, were located at the base of the frontal process of the maxilla, appearing as an ovoid or triangular configuration on axial-plane CT and as a spindle or elliptic shape on the coronal plane. The mean maximal diameter was 9.8 mm (range, 3.6–16.1 mm). These entities exhibited a pagetoid appearance (type I) in 37 (72.5%), a ground-glass appearance (type II) in 8 (15.7%), and a cyst-like appearance (type III) in 6 (11.8%) patients on CT. The FD-like appearance of the frontal process of the maxilla is not rare and can be readily detected by CT.Keywords
This publication has 16 references indexed in Scilit:
- A Prospective Trial of 3T and 1.5T Time-of-Flight and Contrast-Enhanced MR Angiography in the Follow-Up of Coiled Intracranial AneurysmsAmerican Journal of Neuroradiology, 2009
- International Subarachnoid Aneurysm Trial of Neurosurgical Clipping Versus Endovascular CoilingStroke, 2008
- Retreatment of Previously Embolized Cerebral Aneurysms: The Risk of Further Coil Embolization Does Not Negate the Advantage of the Initial EmbolizationAmerican Journal of Neuroradiology, 2008
- Complications of Diagnostic Cerebral Angiography: Evaluation of 19 826 Consecutive Patients1Radiology, 2007
- International subarachnoid aneurysm trial (ISAT) of neurosurgical clipping versus endovascular coiling in 2143 patients with ruptured intracranial aneurysms: a randomised comparison of effects on survival, dependency, seizures, rebleeding, subgroups, and aneurysm occlusionThe Lancet, 2005
- Long-Term Angiographic Recurrences After Selective Endovascular Treatment of Aneurysms With Detachable CoilsStroke, 2003
- Guglielmi Detachable Coil embolization of cerebral aneurysms: 11 years' experienceJournal of Neurosurgery, 2003
- International Subarachnoid Aneurysm Trial (ISAT) of neurosurgical clipping versus endovascular coiling in 2143 patients with ruptured intracranial aneurysms: a randomised trialThe Lancet, 2002
- The Management of Residual and Recurrent Intracranial Aneurysms after Previous Endovascular or Surgical Treatment - A Report of Eighteen CasesActa Neurochirurgica, 2001
- Endovascular treatment of acutely ruptured and unruptured aneurysms of the basilar bifurcationJournal of Neurosurgery, 1997