Atypical posterior reversible encephalopathy syndrome in a case of thrombotic thrombocytopenic purpura with Sjogren's syndrome.

Thrombotic thrombocytopenic purpura (TTP) is a rare hematologic disorder characterized by thrombotic microangiopathy. Neurologic symptoms are frequently seen in its presentation and the most common finding on neuroimaging of TTP is posterior reversible encephalopathy syndrome (PRES). Acute strokes, hemorrhages and atypical PRES are uncommonly seen.

Foreign body (toothpick) causing epiglottitis.

A 25-year-old otherwise healthy woman presented to the hospital with sore throat and dysphagia for 5 days. On her computed tomography images, thickening and edema of the right aryepiglottic fold was noted, associated with an impacted foreign body.

Rhombencephalitis in cocaine-induced nasal septal perforation and skull base erosion.

Rhombencephalitis is a rare and potentially fatal condition involving the brainstem, with infectious, autoimmune, and paraneoplastic etiologies. We present a patient presenting with left-extremity weakness and dysphonia who had brainstem imaging findings suggestive of rhombencephalitis. We suspect that the case was due to inoculation of the brainstem from nasopharyngeal adenoviral infection.

Tragus Piercing Presenting as a Novel Risk Factor with Magnetic Resonance Imaging.

Although magnetic resonance imaging (MRI) excels in a number of medical imaging utilities, one of its particular attraction is the lack of ionizing radiation. However, MRI scans are associated with their own unique safety concerns. We encountered two cases of lost tragus piercings presenting as a novel risk factor in MRI safety.

Cocaine abuse: Longitudinal MR imaging of lasting diffused leukoencephalopathy.

Cocaine use has been known to cause a number of adverse neurological conditions, such as cerebral ischemia and posterior reversible leukoencephalopathy. The radiologic appearance of cocaine-induced leukoencephalopathy is confounded by a common contaminant, levamisole, which is also known to cause multifocal leukoencephalopathy. However, we encountered a case of diffuse leukoencephalopathy in a patient with cocaine use that had extensive involvement of the cerebral white matter, globus pallidi as well as the cerebellum.

Isolated central sulcus hemorrhage: a rare presentation most frequently associated with cerebral amyloid angiopathy.

Central sulcus hemorrhage is a rare imaging finding that can be related to cerebral amyloidosis in a normotensive non-traumatic elderly patient and present as an isolated finding or in association with other areas of involvement. We report a case presenting with an isolated central sulcus hemorrhage on computed tomography. Further imaging work-up excluded other potential causes of peripheral hemorrhages and established a putative diagnosis of cerebral amyloidosis.

Horseshoe adrenal gland in association with asplenia: presentation of six new cases and review of the literature.

Background: Asplenia syndrome is a form of heterotaxy characterized by bilateral right-sidedness. Congenital fusion of the adrenal glands ("horseshoe adrenal gland") is a less common feature of asplenia syndrome, most instances of which have been found at autopsy.

Purpose: To present clinical and imaging features of infants diagnosed with asplenia syndrome and horseshoe adrenal gland.