He had had AP-CML for 4 years, currently in major molecular remission, and the latest BCR-ABL level was 0.04%; he was on dasatinib 140 mg but decreased to 100 mg because he had pancytopenia, which was resolved after adjusting the dose. Also, he had a chronic right-sided small loculated pleural effusion which was attributed to dasatinib (Fig. 1).