label: Renal interstitial foam cells
label_lc: renal interstitial foam cells
description: "Accumulation of foam cells (FC) in the interstitium of the kidney. Renal FCs display phenotypic characteristics of macrophages and belong to the monocyte/macrophage lineage. Histologically, renal FCs are characterized by round cells with small nuclei and an abundant PAS-positive cytoplasm with lipid-containing vacuoles."