Dasatinib-induced Chylothorax in Chronic Myeloid Leukemia

Dasatinib is a potent second-generation tyrosine kinase inhibitor (TKI) used in the first- and second-line treatment of chronic myeloid leukemia (CML). Chylothorax is a rare presentation that results in chyle leakage from the lymphatic system into the pleural space as a consequence of thoracic duct damage. Pleural effusion has been reported frequently in patients treated with Dasatinib however chylothorax has been rarely reported. Here we report an 18year old female presenting with chylothorax after 63 months of Dasatinib intake along with a review of the relevant literature. Currently there are no standard guidelines regarding the approach to chylothorax management after the initial discontinuation of Dasatinib. Since the TKI options after stopping Dasatinib are limited, and most patients would have already failed the trial of first generation TKI, we suggest implementing a complete treatment strategy for this patient population. Key words: chronic myeloid leukemia, Dasatinib, Pleural effusion, Chylothorax.