{Reference Type}: Case Reports {Title}: Concentrically expanded reversed halo sign caused by nivolumab-related pneumonia. {Author}: Tokuyasu H;Sato Y;Sueda Y;Sakai H;Esumi C;Yamasaki A; {Journal}: Respirol Case Rep {Volume}: 12 {Issue}: 5 {Year}: 2024 May 暂无{DOI}: 10.1002/rcr2.1352 {Abstract}: Among immune-related adverse events, pneumonitis is relatively uncommon, and nivolumab-related pneumonitis may present with a reversed halo sign.