The objective of this pilot study is to estimate the ability of peritoneal perfusion to achieve potentially tolerable disease free survival in patients with a variety of tumors. For each class of tumors, an appropriate, distinct median disease free survival will be targeted as the principal endpoint. The trial will be conducted as a set of three single-stage phase II studies, with an early stopping rule for clearly unacceptable outcomes. It is expected that accrual for 59 patients with adenocarcinoma of gastrointestinal origin (other than low grade mucinous), 48 patients with low grade mucinous adenocarcinoma, and 96 patients with primary peritoneal mesothelioma (total accrual of 203) will require approximately 5 -6 years.