Body Region: Brain, and Head and Neck
Author: Birgit Ertl-Wagner, MD, Munich, Germany
1. Patient presentation
An 89-year-old man presents to the emergency room in a comatose state. He was
found in bed by his relatives about one hour prior to presentation; the exact duration of his loss
of consciousness is unknown. No epileptic seizures have been observed and medication intake was
denied. The past medical history is largely unremarkable.
- An unenhanced CT of the brain is unremarkable.
- Directly after the unenhanced CT, a CT-angiography is performed.