The learner will be introduced to the main controversies pertinent to the diagnostic and management approaches to malignancy metastatic to the pleura. Among the issues discussed will be selection of biopsy procedure if fluid cytology is non-diagnostic, choice between pleurodesis and indwelling pleural catheter, and in case of talc pleurodesis the method of delivery (i.e., slurry through chest drain vs. thoracoscopic poudrage).