Francis Deng on Radiopaedia.org

Francis Deng

MD

Dr Francis Deng is Assistant Professor of Radiology and Radiological Science at Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.

Training:

  • Fellowship: Neuroradiology, Massachusetts General Hospital, Harvard Medical School
  • Residency: Diagnostic Radiology, Massachusetts General Hospital, Harvard Medical School
  • Internship: Medicine, Brigham and Women’s Hospital, Harvard Medical School
  • MD: Washington University in St. Louis School of Medicine
  • AB: Harvard College
Disclosures:
  • Nothing to disclose
18 results found
Question

Question 1692

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

Question

Question 2123

A CT report for facial trauma contains the following findings: "There is a mildly comminuted fracture involving the left frontal process of the maxilla and left nasal bone. Fracture lines in this region extend from the pyriform aperture across the medial maxillary buttress to the left inferior orbital rim, sparing the infraorbital canal. However, minimally displaced fractures involve the medial third of the orbital floor, internal orbital buttress, and the lamina papyracea. There is less than 0.5 mm outward herniation of extraconal fat into the ethmoid labyrinth. One of the fracture lines extends anteriorly to the frontomaxillary suture, liberating a minimally displaced fragment of bone containing the lacrimal fossa, which appears intact. The left lateral orbital wall is intact. There is a fracture of the medial wall of the maxillary sinus but not the lateral wall."

What classification best summarizes the most significant injuries?

Question

Question 2124

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?

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Question 2125

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

Question

Question 2132

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?

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Question 2379

A 20-year-old woman with severe vomiting and acute fatty liver of pregnancy, now post-delivery, developed seizures and coma and is assessed with the MRI shown. What is the most likely diagnosis?

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Question 2380

A 20-year-old man with a history of alcohol use presents with confusion and headache and is assessed with the MRI shown. What is the most likely diagnosis?

Question

Question 2381

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?

Question

Question 2585

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

Question

Question 2586

A 50-year-old woman with history of suicide attempts, last seen well 2 days ago, is found down with a reduced level of consciousness. Rapid initial laboratory assessment was abnormal and she is assessed with the MRI shown. What is the most likely diagnosis?

Question

Question 2587

Intrinsic T1 hyperintensity of the bilateral globi pallidi most likely reflects dysfunction of what organ?

Question

Question 2590

A 45-year-old man is hospitalized for alcohol withdrawal. A few days into the hospitalization, he develops disordered movement and is assessed with MRI. What is the most likely diagnosis?

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Question 2591

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

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Question 2592

What is the most common location of cytotoxic lesions of the corpus callosum, such as those seen with seizure, antiseizure medication use/withdrawal, metabolic disturbances, and various other etiologies?

Question

Question 2593

A 14-year-old with acute lymphoblastic leukemia presents with acute right hemiplegia and is evaluated with brain MRI. What is the most likely diagnosis?

Question

Question 2694

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?

Question

Question 2695

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?

Question

Question 2696

What is the best imaging descriptor for the marker of cerebral small vessel disease indicated by the arrow?

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