Table 2. Clinical Course.

	First hospital admission	Second hospital admission	Third hospital admission	After discharge
PR3-ANCA	(+)	(+)	(+)	(-)
< 3.5 (U/mL)	56.7	14.7	31.4	1.9
MPO-ANCA	(-)	(+)	(+)	(+)
< 3.5 (U/mL)	1	125.4	140	26.4
Eosinophils	(-)	(-)	(+)	(-)
< 1,000 (cells/µL)	563	436	5,635	0
Diagnosis	Bacterial pneumonia	Heart failure	EGPA, bacterial pneumonia	EGPA
Chest CT	GGO	GGO, infiltration, pleural effusion	GGO, infiltration, pleural effusion	GGO
Treatment	Antibiotics	Diuretics	Corticosteroids, antibiotics	Mepolizumab

CT: computed tomography; EGPA: eosinophilic granulomatosis with polyangiitis; GGO: ground-glass opacities; MPO-ANCA: myeloperoxidase antineutrophil cytoplasmic antibody; PR3: proteinase 3 antineutrophil cytoplasmic antibody.