Pearls & Oy-sters: Hyperdense or pseudohyperdense MCA sign

Unenhanced CT of the head is usually the first diagnostic study performed for the investigation of acute neurologic signs and symptoms. Specific diagnostic features are helpful for accurate and prompt management of these patients. A hyperdense sign of the MCA was first described in 19831 as an indirect sign of ischemic stroke. Subsequently, numerous articles have detailed the causes of this sign, measured the attenuation differences …