Dasha Pechersky MD, Abstract Co-Author: Nothing to Disclose

Andrew Cortes MD, Presenter: Nothing to Disclose

Deborah L. Reede MD, Abstract Co-Author: Nothing to Disclose

Steven Pulitzer MD, Abstract Co-Author: Nothing to Disclose

Wendy R. K. Smoker MD, Abstract Co-Author: Nothing to Disclose

After viewing this module the user will be familiar with: 1. Common normal variants encountered on brain CT and MR 2. Pathologic entities that mimic these normal variants 3. Imaging features and clinical history that aid in the differential diagnosis

Normal variants encountered on cross sectional imaging of the brain are presented in a quiz format. Variants in the following categories and their pathologic mimics are presented: Parenchymal Variants: Virchow robin spaces (infarction; cystic tumor) and terminal myelination zones (delayed myelination; dysmyelination); Vascular Variants: Arachnoid granulations (dural venous thrombus) and jugular bulb pseudolesions including high riding jugular bulb (paraganglioma, cholesteral granuloma, schwannoma) and Osseous Variants: Asymmetric petrous apex pneumatization (cholesterol granuloma) and venous lakes/transcranial emissary veins (lytic metastasis and multiple myeloma). Imaging and relevant clinical findings that facilitate accurate interpretation are discussed.

http://abstract.rsna.org/uploads/2014/14018166/14018166_f2cw.pdf

Pechersky, D, Cortes, A, Reede, D, Pulitzer, S, Smoker, W, Are You for Real? Normal Variants That Mimic Pathology on Brain CT and MR.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14018166.html