3. All patients must have measurable disease. Measurable disease is defined as at least one lesion that can be accurately measured in at least one dimension (longest dimension to be recorded). Each lesion must be greater than or equal to 20 mm when measured by conventional techniques, including palpation, plain x-ray, CT, and MRI, or greater than or equal to 10 mm when measured by spiral CT. Biopsy confirmation is required if the lesion measures < 30 mm or if the treating physician determines it is clinically indicated. Patients must have at least one "target lesion" to be used to assess response on this protocol as defined by Response Evaluation Criteria in Solid Tumors (RECIST). This lesion should be the one that was biopsied if one was performed. Patients with tumors within and outside a previously irradiated field should have the lesion outside of the irradiated area preferentially designated as the "target" lesion.