**10. Conclusions**

Imaging is a vital tool to diagnose and follow-up on auto-inflammatory spectrum diseases. Although our knowledge of imaging features of specific auto-inflammatory diseases are steadily increasing, they remain particularly challenging to distinguish from auto-immune diseases in many cases, as cellular and cytokine profiles do not translate directly to imaging features. A better understanding of both common and distinguishing imaging features of auto-immune and auto-inflammatory diseases may increase our understanding of disease pathways in the future.

**Author Contributions:** Conceptualization, K.Z. and K.G.H.; investigation, K.Z., I.E., T.D.; writing—original draft preparation, K.Z., I.E.; writing—review and editing, K.Z., I.E., T.D., K.G.H.; visualization, I.E., T.D., K.Z.; supervision, K.G.H.; project administration, K.G.H.; funding acquisition, K.Z. All authors have read and agreed to the published version of the manuscript.

**Funding:** We acknowledge support from the German Research Foundation (DFG) and the Open Access Publication Fund of Charité–Universitätsmedizin Berlin.

**Conflicts of Interest:** The authors declare no conflict of interest.

## **References**


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