Francis Deng ◉

What tumor is most commonly reported to cause neoplastic intracranial aneurysms?

A patient without prior medical history was involved in a motor vehicle collision and arrives obtunded. The patient undergoes noncontrast CT of the head and cervical spine. At the acquisition scanner, you identify scattered convexal subarachnoid hemorrhage and fractures of the right petrous temporal bone, characterized as otic-capsule sparing, coursing to the sigmoid plate, and not clearly involving the petrous carotid canal on that side. Based on this information, which of the following imaging tests is the most appropriate next step?

In a patient with infective endocarditis, which of the following locations is the most likely location of a mycotic (infectious) aneurysm?

A patient with untreated HIV (human immunodeficiency virus) infection in a developed country presents with altered mental status. Neuroimaging reveals multiple brain lesions associated with edema, contrast enhancement, and mass effect. What are the two most likely possibilities in the differential diagnosis?

A 25-year-old man with history of polysubstance use disorder presents with confusion and is assessed with the MRI shown. What is the most likely diagnosis?

A 70-year-old woman presents with 3 days of confusion and is assessed with the MRI shown. What is the most likely diagnosis?

A 35-year-old has a seizure and is evaluated with MRI. What is the most likely diagnosis?

A 70-year-old patient with no medical history presented with generalized tonic-clonic seizure. Head CT showed intracerebral hemorrhage. Based solely on these MR images, and presuming no hemorrhage was present in the deep grey nuclei or brainstem, what is the most likely diagnosis?

A 65-year-old patient presented with several months history of headaches and progressive cognitive decline. Based on only these MR images, what is the most likely diagnosis?