{Reference Type}: Case Reports {Title}: Detailed short-term follow-up high-resolution CT series of differentiation syndrome. {Author}: Oki T;Nagatani Y;Saika W;Watanabe Y; {Journal}: BMJ Case Rep {Volume}: 15 {Issue}: 1 {Year}: Jan 2022 10 暂无{DOI}: 10.1136/bcr-2021-242840 {Abstract}: A 57-year-old man with acute promyelocytic leukaemia (APML) received induction therapy including all-trans-retinoic acid (ATRA). At day 15, he developed dyspnoea, haemoptysis and hypoxia. Thorax CT demonstrated diffuse ground-glass opacity and consolidation predominantly in dorsal regions, which may reflect increased vascular permeability. He was diagnosed with differentiation syndrome. After dexamethasone was administered and chemotherapy suspended, his symptoms improved and abnormal lesions mostly disappeared on follow-up CT examinations. We report a short-term high-resolution CT series of differentiation syndrome.