Letter to the Editor
Reversed Halo Sign: Criteria for Narrowing the Differential Diagnosis
Signo del halo invertido: criterios para reducir el diagnóstico diferencial
Edson Marchiori
, Carmen Lucia Arantes Pereira Azevedo, Gláucia Zanetti
Corresponding author
Departamento de Radiología, Federal University of Rio de Janeiro, Río de Janeiro, Brazil
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