Successful treatment of interstitial pneumonia with autoimmune features using rituximab as salvage therapy.

Interstitial pneumonia with autoimmune features is a complex and heterogeneous research classification without clear management and should be discussed on a case-by-case basis in a pluridisciplinary way. Rituximab could be used for severe lung involvement. The coronavirus crisis can hide other pathologies in such a way that a diagnosis can be overlooked.