44 77-year-old male with a history of hypertension and atrial fibrillation presented at an outside hospital with sudden onset of left facial droop, left arm and leg weakness
Diagnosis: Acute stroke Axial noncontrast CT images of the brain (A, B) show a dense right middle cerebral artery (MCA) sign (yellow arrow, A) and subtle loss of definition in…
49 72-year-old female with a 2-day history of progressively worsening headache, nausea, and vomiting
Diagnosis: Dural venous sinus thrombosis and hemorrhagic infarctions Axial unenhanced CT images (A, C, D; image B is not shown in these annotated images) show a right posterior temporal hemorrhage…
55 18-year-old male involved in head-on motor vehicle collision with closed head injury and admitting Glasgow coma scale score of 3
Diagnosis: Diffuse axonal injury Unenhanced axial CT images (A–C) show multiple small foci of hemorrhage (arrows) in the right pons (A), right basal ganglia, left subinsular region (B) and left…
42 78-year-old male with a 6-month history of failure to thrive from severe malnutrition, a remote history of plasma cell dyscrasia, and multiple recent episodes of Herpes zoster infection presented with left greater than right ptosis, left eye pain, diplopia, and facial numbness
Diagnosis: Intracranial abscess due to sinusitis Axial contrast-enhanced CT (A) shows partial opacification in the left sphenoid sinus (yellow arrow) and a ring-enhancing abscess (red arrows) in the left middle…
