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.