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Spinal Cord Herniation • 10,723 views
This is a case for Prof. Dr. Dillon. It is in press by our neurosurgeons and us, for the use of Duragen. Idiopathic herniation of the thoracic spinal cord: a case report and technique note. U...
Neuro Protocols • 8,067 views
Alisa Gean is doing a great job getting a group together to share and collaborate neuro protocols. This would be a great place from members to share protocols, and open a discussion about the best ima...
Possible SIH with Spinal Subdural Hygroma, What Next? • 6,657 views
[caption id="attachment_602" align="aligncenter" width="407" caption="Sag T1. Tonsils are not particularly low and no sagging of the base of the brain."][/caption] [caption id="attachment_603" alig...
Brachial Plexus MRI Protocol • 5,347 views
BP MRI Protocol Fall is upon us and so is the lecturing season! Like years before, this Fall I will be giving my brachial plexus lecture several times and the most commonly asked question by the au...
Cervical Spine Nomenclature • 5,217 views
The ASNR/ASSR nomenclature document was specific for the lumbar spine. I would be interested in your opinion on the correct terminology for cervical spondylosis: what terms and why. Specifically, t...
Intracranial Hypotension: Advice on Best Treatment • 5,039 views
Middle age female patient diagnosed with Spontaneous intracranial hypotension. Has multiple (approx 23) perineural cysts. Has undergone several blood patches and artificial CSF infusions without rel...
Embolization of Brain Arteriovenous Malformations for Cure • 4,239 views
The editorial comment in the AJNR of Jan 09 by Jayaraman and Cloft is worthy of careful scrutiny, I believe. Although in my personal experience with Onyx and NBCA, final cure rates of brain AVMs from ...
Liver Hemangiomas and Vascular Lesions of the Brain • 4,212 views
[gallery] I have a patient with 15 large liver hemangiomas and two partly calcified lesions in brain. Does anyone know of associated liver hemangiomas and vascular lesions in the brain?
Aunt Mickey (They Look the Same until You Undress Them). Internal Capsule Infarct or Something Else? • 4,144 views
This 30 year old hypertensive female smoker presented with acute onset of right hemiparesis. Her history also included OCP use and dyslipidemia. MRI demonstrated an acute infarct in the posterior limb...
More on DWI of Head and Neck Lesions • 3,979 views
Yesterday I wrote a short comment in the utility of DWI in the evaluation of head and neck lesions. While reading cases in the afternoon I came across a new patient with a retinoblastoma. This pa...
Author Archives: Marcela Posada
Anomalies After Exposure to Methotrexate in the 1st Trimester
This is a 2 day-old term baby with history of methotrexate exposure during first trimester as an abortion attempt. No other relevant clinical history. [...] Continue reading
Trigeminal Cystic Schwannomas
We present two cases of cystic lesions in the Meckel’s cave, both of which showed fluid-fluid levels on MR images and are consistent with trigeminal cystic schwannomas.
Fluid-fluid levels are the result of mucinous areas or microcysts, or as a result of necrosis and hemorrhage. The fluid is unclotted blood against serous fluid. In addition, in areas of necrosis, the fluid that fills a necrotic cavity early on tends to be more proteinaceous than newer interstitial fluid. In such cases, fluid separation, based on viscosity and protein content, may occur. When fluid levels are seen in masses arising from nerves, schwannoma … Continue reading >>
Anti-NMDA Encephalitis
7-yo African-American male with seizures. No fever.
Initial CT scan and labs: normal.
EEG: diffuse slowing over the left cerebral hemisphere.
Brain Biopsy (left temporal lobe): Focal necrosis, dystrophic calcification, chronic inflammation, and microglial activation (the latter suggested an infectious etiology, such as a virus, but no infectious agent was identified).
Two weeks after initial work-up he was found to have +NMDA receptor antibodies.
As part of the search for the etiology of these NMDA receptor antibodies, a testicular ultrasound, Beta-HC, AFP, PET were performed to r/o malignancy — all of these studies were negative. CT of chest, abdomen, and … Continue reading >>