In case of closed Hyperthermic IntraPEritoneal Chemotherapy (HYPEC) surgery team is protected from drugs exposure, but the liquids takes preferential trajectories in the abdomen.
With an Open IntraPEritoneal Chemo Hyperthermia, peritoneal exposure is improved, but surgery team are exposed to antimitotic liquids and vapours.
With The "Open Abdomen-closed" IntraPeritoneal Chemotherapy, advantages of both previous methods are combined without their inconvenients: optimal exposure of the patient, no exposure of the surgery team.