PMC8112373_01
Computerized tomogram of the abdomen showing a normally sited left kidney and an abdominal mass with isodense septations separating hypodense areas
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F1
Excised mass
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F2
The mass was excised, and primary wound closure was done [Figure 2].
Photomicrographs from histology of the specimen. A few of the tubules show tyroidization in keeping with chronic pyelonephritis (a and b). Micrograph (c) shows extensive areas of fibrosis within the supporting stroma of the renal tissue, while micrograph (d) shows areas of cyst formation containing eosinophilic secretions within the renal tissue bordered predominantly by fibrocollagenous stroma
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F3
Histology of the nephrectomy specimen shows marked architectural distortion and replacement of kidney parenchyma by predominantly fibrous tissue, with only a small island of normal renal glomeruli and tubule were seen [Figure 3]. A few of the tubules show thyroidization in keeping with chronic pyelonephritis [Figure 3a and 3b]. Micrograph [Figure 3c] shows extensive areas of fibrosis within the supporting stroma of the renal tissue, while micrograph [Figure 3d] shows areas of cyst formation containing eosinophilic secretions within the renal tissue bordered predominantly by fibrocollagenous stroma.