OPC5: Pressurized IntraThoracic Aerosol Chemotherapy (PITAC) in Patients With Malignant Pleural Effusion.

This is a safety and feasibility study of repeated (minimum two procedures) PITAC directed treatments, and the primary outcome is the number of patients with medical adverse events (AEs) according to the Common Terminology Criteria for Adverse Events (CTCAE) and/or surgical complications according to the Clavien-Dindo classification. This study will include consecutive MPE patients until 20 patients have completed at least two PITAC´s. The PITAC directed treatment will be performed in 4 week intervals. Bedside ultrasound, VAS-pain and VAS-breathlessness, and Quality of Life questionnaires will be performed at baseline, one month follow-up and three months follow-up. Patients with MPE who are eligible for surgery are identified during the multidisciplinary tumor (MDT) conference at the Department of Surgery, Odense University Hospital (OUH), and included based on predefined in- and exclusion criteria. Patients with MPE from non-colorectal or -appendix cancer will be treated with a combination of cisplatin and doxorubicin. Patients with MPE from colorectal or appendix cancer will be treated with oxaliplatin. In brief, The PITAC procedure is the application of aerosolized chemotherapy into the pleural cavity using thoracoscopy. PITAC is performed in the prone or lateral position. A double lumen endotracheal tube is used to allow exclusion of the ipsilateral lung, but this is not (always) necessary with the patient in the prone position. The first trocar is placed guided by ultrasound, and after safe positioning a second trocar can be inserted guided by video thoracoscopy. The chemotherapy is applied to the pleural cavity through a nebulizer inserted through one of the trocars and linked to a high-pressure injector. After five minutes the chemotherapy has been delivered to the pleural cavity, and after an additional 30 minutes of simple diffusion, the intrathoracic air saturated with chemotherapy is evacuated through a series of filters. The patients are monitored for a minimum of one day and will after each PITAC directed treatment be screened for adverse events.