Magnetic Resonance Imaging-guided Thermal Radiofrequencey Ablation of Primary Renal Cell Carcinoma, Hepatic Metastasis, and Other Sites of Solid Organ Tumor and Metastases

DISEASE CHARACTERISTICS: * Diagnosis of primary renal cell carcinoma, hepatic metastases, or other solid tumor meeting the following criteria: * Not amenable to curative or substantial palliative therapy OR * Failed chemotherapy or biological response modifier therapy OR * Unlikely to benefit from conventional chemotherapy * No more than 5 measurable metastatic masses in the liver * No greater than 5 cm in diameter * Other tumor sites allowed if location and size amenable to ablation therapy * Measurable disease PATIENT CHARACTERISTICS: Age: * 18 and over Performance status: * ECOG 0-2 Life expectancy: * More than 4 months Hematopoietic: * Granulocyte count at least 1,000/mm\^3 * Hemoglobin at least 8.0 g/dL * Platelet count at least 100,000/mm\^3 * No untreated bleeding diathesis Hepatic: * PT no greater than 13.5 seconds * PT/PTT normal if prior warfarin or heparin use Renal: * Not specified Cardiovascular: * No implanted pacemaker, incompatible aneurysm clip, or other device that would preclude magnetic resonance imaging * No myocardial infarction within the past 6 weeks * No unstable angina Other: * Not pregnant or nursing * No serious active infection PRIOR CONCURRENT THERAPY: Biologic therapy: * See Disease Characteristics * At least 28 days since prior biological response modifier therapy Chemotherapy: * See Disease Characteristics * At least 28 days since prior chemotherapy Endocrine therapy: * Not specified Radiotherapy: * No prior radiotherapy to study lesion Surgery: * Not specified Other: * At least 7 days since prior nonsteroidal antiinflammatory drugs or aspirin * At least 1 hour since prior heparin * No concurrent warfarin * No concurrent investigational drugs