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Spectrum of MRI Appearances of Untreated Metastases of the Liver

¹ Department of Radiology, University of North Carolina at Chapel Hill, CB 7510, Chapel Hill, NC 27599-7510.
² Department of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7510.
³ Department of Pathology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7510.

View larger version (169K): [in a new window]   Fig. 1A. —68-year-old man with hypervascular liver metastases from colon carcinoma. Axial T2-weighted HASTE image (TR/TE, 8/90) shows many patchy areas of moderate hyperintensity in right lobe of liver.

View larger version (127K): [in a new window]   Fig. 1B. —68-year-old man with hypervascular liver metastases from colon carcinoma. Unenhanced axial T1-weighted spoiled gradient-echo image (150/4.1) shows two areas of mild hypointensity (arrows) in right lobe of liver.

View larger version (137K): [in a new window]   Fig. 1C. —68-year-old man with hypervascular liver metastases from colon carcinoma. Axial T1-weighted spoiled gradient-echo image (150/4.1) obtained 18 sec after initiation of IV administration of contrast material shows homogeneously enhancing metastasis (large arrow) 10 mm in diameter in segment VII. Note other small enhancing lesions (small arrows).

View larger version (144K): [in a new window]   Fig. 1D. —68-year-old man with hypervascular liver metastases from colon carcinoma. Axial T1-weighted spoiled gradient-echo image (150/4.1) obtained 90 sec after initiation of IV administration of contrast material shows progression of enhancement in lesions to isointensity.

View larger version (166K): [in a new window]   Fig. 2A. —49-year-old woman with hypervascular liver metastases from breast carcinoma. Axial T2-weighted HASTE image (TR/TE, 8/90) shows two small (12-mm) metastases with moderate hyperintensity (arrows).

View larger version (127K): [in a new window]   Fig. 2B. —49-year-old woman with hypervascular liver metastases from breast carcinoma. Unenhanced axial T1-weighted spoiled gradient-echo image (150/4.1) shows areas of moderate hypointensity (arrowheads).

View larger version (140K): [in a new window]   Fig. 2C. —49-year-old woman with hypervascular liver metastases from breast carcinoma. Axial T1-weighted spoiled gradient-echo image (150/4.1) obtained 18 sec after initiation of IV contrast administration shows peripheral ring enhancement (arrowheads) of lesions.

View larger version (138K): [in a new window]   Fig. 2D. —49-year-old woman with hypervascular liver metastases from breast carcinoma. Axial T1-weighted spoiled gradient-echo image (150/4.1) obtained 90 sec after initiation of IV contrast administration shows central enhancement progression in lesions with subtle peripheral washout (arrow).

View larger version (112K): [in a new window]   Fig. 3A. —57-year-old woman with hypervascular metastases from carcinoid tumor. Axial T2-weighted HASTE image (TR/TE, 8/90) shows multiple areas of moderate hyperintensity (arrows).

View larger version (118K): [in a new window]   Fig. 3B. —57-year-old woman with hypervascular metastases from carcinoid tumor. Unenhanced axial T1-weighted spoiled gradient-echo image (150/4.1) shows corresponding areas of moderate hypointensity (arrowheads).

View larger version (121K): [in a new window]   Fig. 3C. —57-year-old woman with hypervascular metastases from carcinoid tumor. Axial T1-weighted spoiled gradient-echo image (150/4.1) obtained 18 sec after initiation of IV contrast administration shows corresponding areas of intense, homogeneous, or peripheral ring enhancement of lesions.

View larger version (111K): [in a new window]   Fig. 3D. —57-year-old woman with hypervascular metastases from carcinoid tumor. Axial T1-weighted spoiled gradient-echo image (150/4.1) obtained 90 sec after initiation of IV contrast administration shows peripheral washout (arrow), a feature often apparent in hypervascular metastases.

View larger version (136K): [in a new window]   Fig. 4A. —33-year-old woman with hypovascular metastasis from colon adenocarcinoma. Axial T2-weighted HASTE image (TR/TE, 8/90) shows large lesion (arrows) of heterogeneous signal intensity with central areas of marked hyperintensity.

View larger version (99K): [in a new window]   Fig. 4B. —33-year-old woman with hypovascular metastasis from colon adenocarcinoma. Unenhanced axial T1-weighted spoiled gradient-echo image (150/4.1) shows lesion as area of moderate hypointensity.

View larger version (120K): [in a new window]   Fig. 4C. —33-year-old woman with hypovascular metastasis from colon adenocarcinoma. Axial T1-weighted spoiled gradient-echo image (150/4.1) obtained 18 sec after initiation of IV contrast administration shows thin peripheral ring enhancement (arrowheads).

View larger version (122K): [in a new window]   Fig. 4D. —33-year-old woman with hypovascular metastasis from colon adenocarcinoma. Axial T1-weighted spoiled gradient-echo image (150/4.1) obtained 90 sec after initiation of IV contrast administration shows that peripheral ring enhancement (arrowheads) remains clearly visible.

View larger version (120K): [in a new window]   Fig. 4E. —33-year-old woman with hypovascular metastasis from colon adenocarcinoma. Photomicrograph of histopathologic section obtained from periphery of lesion shows distinct peripheral zone of varying amounts of fibrous tissue and inflammatory infiltrates (white arrows) that extend into lesion surrounding islets of tumoral cells (black arrow). Liver parenchyma (arrowhead) is uninvolved. Distinctive cauliflower appearance seen on gadolinium-enhanced images (C and D) is related to fibrous tissue that invaginates into tumor. (H and E, x10)

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