Large lung mass lesion with spontaneous regression in a patient with IgG4‐related lung disease

Abstract

Key message IgG4‐related lung disease (IgG4‐RLD) may present with a variety of radiological findings, but large lung mass lesion are rare. Although steroid therapy is strongly recommended for IgG4‐RLD with or without symptoms, respirologists should be aware that some patients may not need steroid therapy.

Keywords

• IgG4 related disease
• IgG4‐related lung disease
• large lung mass lesion
• lung cancer
• spontaneous regression