“…Lupus cystitis and damage to the ureters is a relatively rare complication of SLE, and its clinical features remain obscure. 1,3,6–9 Generally, ureteritis refers to inflammatory changes in the ureter caused by bacterial invasion, and it mainly manifests as lower back pain, hematuria, fever, and urinary irritation. However, the underlying pathological basis of SLE-associated ureteritis is vasculitis.…”