Radiofrequency Ablation of 100 Hepatic Metastases with a Mean Follow-Up of More Than 1 Year
Thierry de Baere1,
Dominique Elias2,
Clarisse Dromain1,
Mostafa Gamal El Din1,
Viseth Kuoch1,
Michel Ducreux3,
Valerie Boige3,
Nathalie Lassau1,
Veronique Marteau1,
Philippe Lasser2 and
Alain Roche1
1
Departement d'Imagerie Medicale, Institut Gustave Roussy, Villejuif,
France.
2
Departement de Chirurgie, Institut Gustave Roussy, 94805 Villejuif Cedex,
France.
3
Departement de Medecine, Institut Gustave Roussy, 94805 Villejuif Cedex,
France.
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Fig. 1A. —68-year-old women with colon cancer. Sonogram obtained after
current had been delivered for few seconds shows hypoechoic metastatic tumor
nodule (arrowheads) with radiofrequency electrode needle inserted
through it. Hyperechoic zone (arrow) can be seen at tip of electrode
needle.
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Fig. 1B. —68-year-old woman with colon cancer. Sonogram obtained at end
of procedure, 18 min after A, shows that hyperechoic zone has enlarged;
it now encompasses location of metastasis.
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Fig. 2A. —54-year-old man with colon cancer. CT scan obtained 3 months
after right hepatectomy (note staples at edge of segment IV) shows hepatic
3-cm-diameter metastasis in segment II (arrow).
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Fig. 2B. —54-year-old man with colon cancer. CT scan obtained at same
level as A 2 months after radiofrequency ablation of tumor. Hypodense
"scar" without contrast enhancement is completely covering site of
metastasis, with mild dilatation of biliary tract upstream.
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Fig. 3A. —57-year-old woman with colon cancer metastasis who had been
treated with radiofrequency ablation 3 months earlier. Arterial phase CT scan
obtained at site of radiofrequency ablation shows hypodense nodule
(arrow) without contrast enhancement.
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Fig. 3B. —57-year-old woman with colon cancer metastasis who had been
treated with radiofrequency ablation 3 months earlier. T1-weighted MR image
obtained same day as A shows nodule that is hyperintense because of
hemorrhage.
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Fig. 3C. —57-year-old woman with colon cancer metastasis who had been
treated with radiofrequency ablation 3 months earlier. Dynamic MR image shows
gadolinium uptake at posterior margin of nodule later confirmed to be tumor
regrowth (arrow).
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Fig. 4A. —49-year-old woman with colon cancer. CT scan obtained 24 hr
after radiofrequency ablation of subcapsular metastasis from colon cancer.
Hypodense area without contrast enhancement corresponds to treated region.
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Fig. 4B. —49-year-old woman with colon cancer. CT scan obtained 2
months after A revealed air—fluid level corresponding to abscess
that was drained percutaneously.
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Copyright © 2000 by the American Roentgen Ray Society.
