“…Treatment with Au-198 has certain inherent disadvantages, including the difficulty of handling it, but perhaps the most important of these is the radiation hazard involved to the medical and nursing personnel administering the treatment. More recently attempts have been made to treat malignant effusions with chemotherapeutic agents, thus avoiding the radiation risk, using nitrogen mustard (HN2), thiotepa (Bateman, 1955), and mannomustine dihydrochloride (" degranol ") (Sellei and Eckhardt, 1958). The series of cases described here were treated to assess the value of intracavity HN2 in the control of recurrent malignant effusions.…”