Subjects who meet eligibility will have a pleural catheter placed 2 weeks prior to the first dose. Subjects are then admitted to the research center on Days 1 and 4 for dosing and overnight observation. Subjects are then followed-up as outpatients for a total of 6 months. Radiographic evaluations are repeated on Day 64 and at 6 months. The pleural catheter is removed once it is not necessary.