differentiation syndrome mimicking covid-19 pneumonia

Introduction: sars-cov-2 infection is spreading worldwide, and due to multi-organ involvement, it could mimic other well-known diseases. case presentation: herein, we describe the case of a pediatric patient with acute promyelocytic leukemia (apl), who developed severe respiratory illness with diffuse pulmonary involvement after consuming all-transretinoic acid during the covid-19 pandemic. conclusions: all-transretinoic acid syndrome is a very similar condition to covid-19 both in clinical presentations and radiologic findings; thus, the treatment of such patients may be challenging.