PMC8010803_01
The radiographic findings. A conventional chest radiograph showing a solitary circular opacity (white arrowhead) in the right pulmonary hilar region (A). A chest CT image showing a well-marginated soft-tissue nodule in the right upper lobe anterior segment (wide arrow) with distinct lymphadenopathy (narrow arrow) (B).
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Renal sonography of both kidneys revealed the preservation of the size with slightly elevated renal cortex echogenicity, while a chest radiograph showed a round circumscribed solitary lesion at the right pulmonary hilar region, and subsequent chest computed tomography (CT) revealed a solid mass in the right upper lobe anterior segment with distinct lymphadenopathy (Figure 1).
The renal biopsy finding. Light micrographs showed marked interstitial inflammatory infiltrates (A) and glomerulus with cellular crescent (arrow) (B). Right panel, Hematoxylin and Eosin staining, left panel, Periodic acid-Schiff staining. The scale bar is indicated in each panel.
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A renal biopsy performed on clinical day 1 (Figure 2) revealed 3 cores of renal parenchyma with 10 glomeruli, 3 of which were globally sclerotic.