case_images: PMC10620549_01
case_images: Kidney biopsy findings. a Light microscopy displaying crescent formation in a glomerulus (periodic acid-Schiff; original magnification, x400). b Ultrastructural examination using electron microscopy presenting diffusely effaced epithelial cell foot processes (red arrows).
case_images: cnd-2023-0013-0001-534331_F01.jpg
case_images: PMC10620549_01_cnd-2023-0013-0001-534331_F01.jpg
case_images: F1
case_images: An emergency renal biopsy revealed pauci-immune necrotizing crescentic glomerulonephritis (shown in Fig. 1).
case_images: PMC10620549_02
case_images: PMC10620549_03
case_images: Timeline of clinical events following COVID-19 to discharge and last follow-up. Red lines or dots indicate MPO-ANCA titers, and blue lines or dots indicate CRP levels. The red dotted horizontal line represents the equivocal threshold value 3.5 (<3.5: negative, 3.5-5.0: equivocal, >5.0: positive) for MPO-ANCA measured by fluorimetric enzyme-linked immunoassay (FEIA) at Samkwang Medical Laboratories. The blue dotted horizontal lines represent the reference value 0.5 (<0.5: negative). MPO, myeloperoxidase; AVG, arteriovenous graft; ANCA, anti-neutrophil cytoplasmic antibody; CRP, C-reactive protein; COVID-19, coronavirus disease 2019; GI, gastroenterology; CSF, cerebrospinal fluid; MPD, methylprednisolone; PD, prednisolone.
case_images: cnd-2023-0013-0001-534331_F02.jpg
case_images: PMC10620549_05_cnd-2023-0013-0001-534331_F02.jpg
case_images: F2
case_images: Oral prednisolone was initiated at a daily dose of 40 mg and gradually tapered, as illustrated in Figure 2. The key features of the clinical case are presented in Figure 2.
case_images: Chest CT images from November 3rd, 2022. a Right pleural effusion; pigtail catheter inserted. b Irregular consolidation and ground-glass opacities in the superior segment of the left lower lobe.
case_images: cnd-2023-0013-0001-534331_F03.jpg
case_images: PMC10620549_03_cnd-2023-0013-0001-534331_F03.jpg
case_images: F3
case_images: The chest computed tomography (CT) findings are illustrated in Figure 3; the abdominal and pelvic CT showed no significant abnormalities.
case_images: PMC10620549_04
case_images: Timeline of clinical events following COVID-19 to discharge and last follow-up. Red lines or dots indicate MPO-ANCA titers, and blue lines or dots indicate CRP levels. The red dotted horizontal line represents the equivocal threshold value 3.5 (<3.5: negative, 3.5-5.0: equivocal, >5.0: positive) for MPO-ANCA measured by fluorimetric enzyme-linked immunoassay (FEIA) at Samkwang Medical Laboratories. The blue dotted horizontal lines represent the reference value 0.5 (<0.5: negative). MPO, myeloperoxidase; AVG, arteriovenous graft; ANCA, anti-neutrophil cytoplasmic antibody; CRP, C-reactive protein; COVID-19, coronavirus disease 2019; GI, gastroenterology; CSF, cerebrospinal fluid; MPD, methylprednisolone; PD, prednisolone.
case_images: cnd-2023-0013-0001-534331_F02.jpg
case_images: PMC10620549_05_cnd-2023-0013-0001-534331_F02.jpg
case_images: F2
case_images: Oral prednisolone was initiated at a daily dose of 40 mg and gradually tapered, as illustrated in Figure 2. The key features of the clinical case are presented in Figure 2.
case_images: PMC10620549_05
case_images: Timeline of clinical events following COVID-19 to discharge and last follow-up. Red lines or dots indicate MPO-ANCA titers, and blue lines or dots indicate CRP levels. The red dotted horizontal line represents the equivocal threshold value 3.5 (<3.5: negative, 3.5-5.0: equivocal, >5.0: positive) for MPO-ANCA measured by fluorimetric enzyme-linked immunoassay (FEIA) at Samkwang Medical Laboratories. The blue dotted horizontal lines represent the reference value 0.5 (<0.5: negative). MPO, myeloperoxidase; AVG, arteriovenous graft; ANCA, anti-neutrophil cytoplasmic antibody; CRP, C-reactive protein; COVID-19, coronavirus disease 2019; GI, gastroenterology; CSF, cerebrospinal fluid; MPD, methylprednisolone; PD, prednisolone.
case_images: cnd-2023-0013-0001-534331_F02.jpg
case_images: PMC10620549_05_cnd-2023-0013-0001-534331_F02.jpg
case_images: F2
case_images: Oral prednisolone was initiated at a daily dose of 40 mg and gradually tapered, as illustrated in Figure 2. The key features of the clinical case are presented in Figure 2.