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_synpic39107: Angiogram prior to gamma knife therapy demonstrating an AVM measuring approximately 1cm in diameter predominantly fed by left lateral posterior choroidal artery. |
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.