ITPCs have been shown to successfully and safely control dyspnea in patients with malignant pleural effusions; producing long-lasting plurodesis in greater than 50% of recipients. Compared to the large amount of published data regarding the use of ITPC in malignant effusions, there is a paucity of data regarding the use of ITPC in benign disease; particularly HH. A small series of four patients and a single case report have previously described the successful use of an ITPC for the management of HH. There exists the need for a prospective study to investigate the potential benefit of using ITPCs in patients with HH.