Brain atrophy is a hallmark of neuropsychiatric (NP) systemic lupus erythematosus (SLE), and probably the most important magnetic resonance imaging (MRI) biomarker for the diagnosis and prognosis of NPSLE. 1,2 Atrophy in NPSLE is typically slowly progressive, over several years. Brain atrophy could be diffuse or could involve preferentially the fronto-temporal regions, with symmetrical involvement of gray and white matter. Underlying mechanisms of atrophy are not well understood, commonly incriminated factors being long-standing disease, activity and injury scores