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E2256. Revisiting Classic Signs In Neuroradiology
Authors
  1. Gaurav Parmar; Yale New Haven Health/Bridgeport Hospital
  2. Anas Saeed Bamashmos; Yale New Haven Health/Bridgeport Hospital
  3. Ayah Megahed; Yale New Haven Health/Bridgeport Hospital
  4. Ashkan Heshmatzade-Behzadi; Yale New Haven Health/Bridgeport Hospital
  5. Kareem Elfatairy; Yale New Haven Health/Bridgeport Hospital
  6. Noel Velasco; Yale New Haven Health/Bridgeport Hospital
Background
Neuroimaging remains one of the challenging sub-specialties in diagnostic radiology. Radiological signs are recognizable, characteristic patterns to describe abnormalities on imaging modalities which aid in diagnosis and or at least narrow down the list of differential diagnosis. We here describe and illustrate some of the classic and more common neuroradiologic signs with relevant images, and pertinent features related to each sign with emphasis on mechanism of appearance and the differential diagnosis to be considered. We further distribute these signs into categories - neoplastic, inflammatory/infectious, congenital, trauma, ischemia and miscellaneous.

Educational Goals / Teaching Points
Review classic signs in Neuroimaging. Discuss imaging features of each sign on different modalities, understand the mechanism of appearance of these signs and the differential diagnosis to be considered.

Key Anatomic/Physiologic Issues and Imaging Findings/Techniques
CT / MRI of the Brain, US Brain

Conclusion
Radiological signs are easy to remember and familiarity with these signs can help recognize abnormalities. By understanding the mechanism by which pathologies create the appearance of signs, radiologists can make the diagnosis promptly and efficiently.