OUTLINE: This is a dose escalation study. Patients receive E7070 IV over 1 hour once every 3 weeks. Treatment continues for at least 2 courses in the absence of disease progression or unacceptable toxicity. Cohorts of 3-6 patients receive escalating doses of E7070 until the maximum tolerated dose (MTD) is determined. The MTD is defined as the dose preceding that at which at least 2 of 6 patients experience dose limiting toxicity.