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. 2026 Jan 29;27:138. doi: 10.1186/s12882-026-04775-7

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© The Author(s) 2026

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Fig. 2 — Kidney biopsy findings. (a) Diffuse interstitial inflammation with tubular atrophy (hematoxylin-eosin [HE], ×200). (b) Segmental glomerulosclerosis (yellow arrow) (periodic acid-Schiff [PAS], ×400). (c) Oil Red O staining on frozen sections showing negative lipid deposition (Oil red O, ×400). (d) Electron microscopy showing uneven GBM thickness with focal basket-weave appearance (orange arrow), along with partial podocyte foot process effacement (yellow arrows); no electron-dense deposits or lipoprotein thrombi were observed. (e) Electron microscopy demonstrating a thin GBM, with the thinnest segments approximately 0.11–0.18 μm (yellow arrows)