Table 4 Histopathological findings

Nasal mucosa biopsy

6

1

 Granuloma of artery/perivascular area

2

-

 Necrotizing vasculitis

1

-

 No siginificant findings

4

1

Lung biopsy

7

4

 Granulomatous inflammation of artery/perivascular area

3

1

 Necrotizing vasculitis

2

0

 Granulomatous inflammation of respiratory tract

3

0

 Vasculitis (without necrosis)*

1

1

 No siginificant findings

4

2

Renal biopsy

3

0

 Granuloma

1

-

 Necrotizing vasculitis/glomerulonephritis

2

-

 Vasulitis/glomerulonephritis (without necrosis)*

1

-

 No siginificant findings

-

-

 Classification for ANCA-associated glomerulonephritis

  Cresentic

2

-

  Sclerotic

1

-