Limits...
Radiation Necrosis

Galifianakis AG - MedPix (2007)

View Article: 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.


This axial T2-weighted image demonstrates ambiguous T2 signal which does not exactly follow the expected imaging characteristics of necrotic tissue. Surrounding this lesion is extensive T2-high signal, likely representing edema.  Note the mass effect of a slight left to right midline shift.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=MPX1053&req=5

MPX1053_synpic38935: This axial T2-weighted image demonstrates ambiguous T2 signal which does not exactly follow the expected imaging characteristics of necrotic tissue. Surrounding this lesion is extensive T2-high signal, likely representing edema. Note the mass effect of a slight left to right midline shift.


Radiation Necrosis

Galifianakis AG - MedPix (2007)

This axial T2-weighted image demonstrates ambiguous T2 signal which does not exactly follow the expected imaging characteristics of necrotic tissue. Surrounding this lesion is extensive T2-high signal, likely representing edema.  Note the mass effect of a slight left to right midline shift.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=MPX1053&req=5

MPX1053_synpic38935: This axial T2-weighted image demonstrates ambiguous T2 signal which does not exactly follow the expected imaging characteristics of necrotic tissue. Surrounding this lesion is extensive T2-high signal, likely representing edema. Note the mass effect of a slight left to right midline shift.

View Article: 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.