PMC10331334_01
(a) Axial thoracic CT displaying infiltrates with both lungs and diffuse, bilateral consolidative opacities with associated air bronchograms with sparing of subpleural space, (b) Puncture renal biopsy: ischemic type sclerosant glomeruli, mesangial expansion, segmentary necrotizing lesions with fibrin: compatible with focal and segmentary glomerulonephritis, and (c) direct immunofluorescence negative for Immunoglobulins G, A, M, Cq1, C3c, C4c, and fibrinogen.
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As a result, she was taken to the emergency room, where a thoracic computerized tomography (CT) scan revealed bilateral diffuse alveolar opacities, a finding consistent with diffuse alveolar hemorrhage (DAH) (Figure 1(a)). The immunofluorescence demonstrated pauci-immune deposition of immune complexes (Figure 1(b) and (c)).