Study of efficacy and safety of laparoscopic intra -abdominal chemotherapy performed in patients with peritoneal carcinomatosis from colorectal , ovarian, gastric cancer and primary peritoneal tumors.

Primary objectives: Cohort A: - To evaluate the efficacy of PIPAC according to the Overall Response Rate (ORR) in peritoneal carcinomatosis (CP) from colorectal, ovarian, gastric cancers and primary peritoneal tumors.Cohort B- To determine the maximum tolerated dose of oxaliplatin o cisplatin and doxorubicin by PIPAC- To evaluate safety and tolerability of oxaliplatin o cisplatin and doxorubicin by PIPAC
Primary endpoints: Overall Response Rate (ORR) according to RECIST criteria (version 1.1)