OUTLINE: This is a dose escalation study of adenoviral p53 gene therapy. Patients undergo removal of ascites, if present, from the peritoneal cavity followed by a bolus infusion of adenovirus p53 once a week for 3 consecutive weeks, followed by a 2 week rest. Treatment continues every 4 weeks in the absence of disease progression or unacceptable toxicity. Patients who experience palliative results with at least stable disease may continue treatment weekly without the rest period. Cohorts of 3-6 patients are treated at each level of adenovirus p53. The maximum tolerated dose is defined as the dose level below that at which 2 of 6 patients experience dose limiting toxicity. Patients who receive the MTD without unacceptable toxicity may continue to receive treatment on a weekly basis.