Jennifer Orning

Jennifer Orning
University of Illinois at Chicago | UIC · Department of Neurosurgery (Chicago)

Doctor of Medicine


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Additional affiliations
June 2007 - June 2014
University of North Carolina at Chapel Hill
  • Neurosurgical Resident


Publications (6)
Background: Subarachnoid hemorrhage cases with multiple cerebral aneurysms frequently demonstrate a hemorrhage pattern that does not definitively delineate the source aneurysm. In these cases, rupture site is ascertained from angiographic features of the aneurysm such as size, morphology, and location. Objective: To examine the frequency with wh...
- Non-aneurysmal subarachnoid hemorrhage (SAH) occurs in about 15% of all non-traumatic SAH cases. - Often, this presents with a perimesencephalic pattern of hemorrhage, with the majority of hyperdensity found around the brainstem on non-contrast head CT. - Since the patho-physiology is attributed to be related to venous hemorrhage. We hypothesized...
Full-text available
Background: To determine the utility of digital subtraction angiography (DSA) in patients with unruptured intracranial aneurysms (UIA) detected on noninvasive imaging, such as magnetic resonance angiography (MRA) and computed tomography angiography (CTA). The follow-up of patients with untreated UIAs involves serial imaging; however, this diagnosi...
Background Posterior fossa arteriovenous malformations (AVMs) are considered to have a higher risk of poor outcome, as are AVMs with associated aneurysms. We postulated that posterior fossa malformations may be more prone to associated feeder vessel aneurysms, and to aneurysmal source of hemorrhage. Objective To examine the prevalence and hemorrhag...
Introduction Posterior fossa arteriovenous malformations (AVMs) are considered higher risk, reported by some to be due to the enclosed space and highly eloquent functional areas contained therein, despite often smaller hematoma volumes after rupture. Associated aneurysms engender a higher risk of poor outcome as well. We suggest that posterior foss...
Full-text available
Granular cell tumors of the pituitary and infundibular stalk are rare, slow growing tumors. Although usually asymptomatic, neurological deficits with chiasmatic compression can lead to clinical presentation. We describe a case in which a purely endoscopic endonasal approach was used for complete resection of an infundibular granular cell tumor with...


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