Repeat renal biopsy findings in 82 lupus nephritis patients: a clinicopathological study

Renal biopsy should be repeated in patients with LN who have undergone treatment if urinalysis results and renal function worsen or do not improve to determine whether the pathological class of LN has changed and whether LN is in the active phase. Repeat renal biopsies show increased chronicity, the pathological types are predominantly non-remitting or worsening, with a considerable proportion of patients also presenting with crescentic glomerulonephritis. Repeat renal biopsy is necessary for the diagnosis of LN patients and may inform the design of subsequent treatment plans.