COVID-19-induced granulomatosis with polyangiitis: A case report of a 16-year-old East Asian and literature review.

A total of 12 cases were identified and, when combined with the present case, yielded 13 cases of GPA post-COVID-19 infection, comprising 5 males and 8 females with an average age of (40.6 ± 19.5) years. The interval between COVID-19 infection and the diagnosis of GPA varied from 1 day to 3 months across all cases. Mortality was reported at 7.7% (1/13). The most common clinical manifestations included cough (69.2%) and dyspnea (46.1%). Computed tomography scans revealed ground-glass opacities and multifocal pulmonary nodules. In all cases, positive findings for c-ANCA and protease 3-antibody were observed. Renal involvement was observed in more than half of the patients.