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Radiation Necrosis
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MedPix Image - MedPix Case
Affiliation: Uniformed Services University
ABSTRACT
Diagnosis: Radiation Necrosis History: The patient is a 25 year old man who initially presented s/p snow mobile accident with multiple hemorrhagic contusions. On initial evaluation, the patient was incidentally noted to have a left temporal Arteriovenous Malformation. This AVM was subsequently treated with Gamma Knife therapy. The patient now presents 12 months later with no complaints for routine follow up. Findings: •12 months following gamma knife therapy, follow up imaging revealed a rim-enhancing mass in the left temporal lobe adjacent to the posterior horn of the left ventricle. Surrounding this lesion is extensive T2-high signal, likely representing edema. • Initial MR images show malacic changes in the frontal lobes with an incidental prominent vascular structures suggestive of a developmental venous anomaly. •Arteriogram also performed to therapy confirmed the presence of an AVM, predominantly fed by left lateral posterior choroidal artery. Ddx: •Radiation Necrosis •New Primary Brain neoplasm •Metastatic disease • Infectious process Dxhow: • Biopsy revealed necrotic tissue consistent with radiation necrosis. • MR spectroscopy No MeSH data available. |
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MPX1053_synpic39272: MRI on initial presentation revealed nonopacifying flow voids in the region of the choroid plexus of the left lateral ventricle with extension into the left thalamus. Also noted is evidence of contusion in the right frontal lobe. |
View Article: MedPix Image - MedPix Case
Affiliation: Uniformed Services University
Diagnosis: Radiation Necrosis
History: The patient is a 25 year old man who initially presented s/p snow mobile accident with multiple hemorrhagic contusions. On initial evaluation, the patient was incidentally noted to have a left temporal Arteriovenous Malformation. This AVM was subsequently treated with Gamma Knife therapy. The patient now presents 12 months later with no complaints for routine follow up.
Findings: •12 months following gamma knife therapy, follow up imaging revealed a rim-enhancing mass in the left temporal lobe adjacent to the posterior horn of the left ventricle. Surrounding this lesion is extensive T2-high signal, likely representing edema. • Initial MR images show malacic changes in the frontal lobes with an incidental prominent vascular structures suggestive of a developmental venous anomaly. •Arteriogram also performed to therapy confirmed the presence of an AVM, predominantly fed by left lateral posterior choroidal artery.
Ddx: •Radiation Necrosis •New Primary Brain neoplasm •Metastatic disease • Infectious process
Dxhow: • Biopsy revealed necrotic tissue consistent with radiation necrosis. • MR spectroscopy
No MeSH data available.
