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Metastatic adenocarcinoma.

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Presentation on theme: "Metastatic adenocarcinoma."— Presentation transcript:

1 Metastatic adenocarcinoma.
Metastatic adenocarcinoma. The T2-weighted image (A) shows a hypointense mass lesion surrounded by massive edema. On the contrast-enhanced T1-weighted image (B), there is ring enhancement presumably due to central necrosis. With diffusion weighting (C), the central part of the tumor becomes markedly hyperintense, while the ADC map (D) reveals low values, indicating restricted diffusion. Histopathologic section (E): Note that besides tumor cells, additional geographic necrosis (N), lymphocytes (arrowheads), and connective tissue (arrow) are present (hematoxylin and eosin stain; original magnification, × 200)‏ Marius Hartmann et al. AJNR Am J Neuroradiol 2001;22: ©2001 by American Society of Neuroradiology

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