The Clinicopathological Correlation and Outcome of Glomerulonephritis With Crescent: A Single-Center Study.

Background: There is a lack of standardized treatments for patients with less than 50% crescents observed in their renal biopsies. This study aimed to analyze the crescent percentage, clinicopathological characteristics, and renal prognosis of glomerulonephritis (GN) cases with at least one crescentic lesion.

Materials And Methods: This retrospective cohort study was conducted at the Indira Gandhi Institute of Medical Sciences, Patna, from January 2016 to December 2020. Consecutive patients (aged between 18 and 65 years) with renal biopsy findings suggestive of GN and at least one crescent were included in the study. Demographic details and clinical presentation were collected from the medical records.

Results: A total of 145 patients were included. The mean (standard deviation (SD)) age was 33.06 (11.739) years. Hemoptysis was significantly higher in the ≥50% crescent group (P=0.011). Rapidly progressive glomerulonephritis (RPGN) was significantly higher in the ≥50% crescent group (P<0.001). There was a significant difference observed in mean creatinine (P=0.001), mean crescents (P<0.001), and mean urine polymerase chain reaction (PCR) (P=0.031). Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis was significantly higher in the ≥50% crescent group (P<0.001). Complete remission decreased as crescents increased. In GN with crescent, the presence of fibrous crescents (≥50%) is associated with a higher rate of treatment resistance (100%) compared to fibrocellular (58.33%) and cellular crescents (6.25%). In the ≥50% crescent group, death was significantly higher in patients with fibrous crescent age (57.14%).

Conclusion: Crescent percentage and crescent age were found to be significantly related to greater risk of renal failure and resistance to treatment.