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Overdiagnosis: under-recognized clinical and pathological features of "focal ischemic glomerulosclerosis clustering"

Mingfeng Zhao1, Rui Zhang2, Feilai Xie3

  • 1Department of Pathology, Dongfang Hospital, Fuzhou 350025, China; Department of Pathology, Binzhou Medical University, Binzhou 256603, China.

Pathology, Research and Practice
|November 5, 2013
PubMed

Insights

Focal ischemic glomerulosclerosis clustering (FIGSC) presents as a distinct renal scar, often linked to afferent arteriole issues rather than primary glomerulonephritis. This condition shows a better prognosis than diffuse proliferative sclerosis glomerulonephritis, suggesting it

Area of Science:

  • Nephrology
  • Pathology
  • Renal Medicine

Background:

  • Focal ischemic glomerulosclerosis clustering (FIGSC) is a rare renal finding characterized by focal scars with significant global sclerosis.
  • Distinguishing FIGSC from other glomerular diseases is crucial to prevent misdiagnosis and inappropriate treatment.

Purpose of the Study:

  • To investigate the clinical and pathological basis of FIGSC.
  • To differentiate FIGSC from diffuse proliferative sclerosis glomerulonephritis and assess its prognostic implications.

Main Methods:

  • Retrospective analysis of clinical and pathological data from 15 patients with FIGSC.
  • Comparison of FIGSC cases with a diffuse proliferative sclerosis glomerulonephritis group.

Main Results:

  • FIGSC cases exhibited high global sclerosis (>50%) with mild/moderate tubulointerstitial lesions and characteristic sclerotic distribution.
  • Afferent arteriole sclerosis was noted in 14 cases; 14 patients did not progress to end-stage renal disease (ESRD).
  • FIGSC group showed significantly lower rates of severe tubulointerstitial lesions, serum creatinine, BUN, and ESRD incidence compared to the glomerulonephritis group (P<0.05).

Conclusions:

  • FIGSC may represent a focal renal scar secondary to afferent arteriole abnormalities (sclerosis, stenosis, obstruction) rather than primary glomerulonephritis.
  • Understanding FIGSC is vital for accurate diagnosis, avoiding overdiagnosis, and optimizing patient management.
Keywords:
Arteriole sclerosisClinical and pathological featuresFocal ischemic glomerulosclerosisOverdiagnosis

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