Table 3

Radiographical abnormalities among OP patients

All patientsCOPAFOPGOPp Value
Number of patients61361015
Location
  Central (%)1 (2)1 (3)0 (0)0 (0)n.s.
  Peripheral (%)46 (75)26 (72)7 (70)13 (87)n.s.
  Diffuse (%)14 (23)9 (25)3 (30)2 (13)n.s.
Character of radiographical change*
 Nodule or mass (%)54 (89)32 (89)7 (70)15 (100)0.04
  Consolidation (%)22 (36)13 (36)5 (50)4 (27)n.s.
  Ground-glass (%)11 (18)9 (25)2 (20)0 (0)n.s.
  Air bronchograms (%)16 (26)8 (22)5 (50)3 (20)n.s.
Other findings*
  Adenopathy
   Mediastinal (%)9 (15)5 (14)2 (20)2 (13)n.s.
   Hilar (%)3 (5)2 (6)0 (0)1 (7)n.s.
  Honeycombing (%)2 (3)0 (0)0 (0)2 (13)n.s.
  Pleural effusion (%)8 (13)6 (17)2 (20)0 (0)n.s.
  Cavitation (%)2 (3)1 (3)1 (10)0 (0)n.s.
  Reverse halo sign (%)1 (2)0 (0)1 (10)0 (0)n.s.
  Bronchiectasis (%)9 (15)5 (14)2 (20)2 (13)n.s.
  Fibrosis (%)4 (7)1 (3)1 (10)2 (13)n.s.
  • *Some patients had more than one radiographical finding.

  • AFOP, acute fibrinous and organising pneumonia; COP, cryptogenic organising pneumonia; GOP, granulomatous organising pneumonia; OP, organising pneumonia.