Table 3.

Pathologic pulmonary Findings of 18 patients

Patient No.	Histologic Findings
1	UIP pattern with areas showing features of DIP
2	Follicular bronchiolitis and cellular bronchiolitis with foci of OP and foci resembling NSIP
3	UIP pattern with a slight increase in lymphoid aggregates and focal OP
4	NSIP with follicular hyperplasia and DIP features
5	UIP pattern
6	NSIP with OP and follicular bronchiolitis
7	Fibroinflammatory changes with granulomas consistent with GPA
8	UIP pattern
9	UIP pattern with some associated chronic bronchiolitis, chronic pleuritis, and focal OP
10	UIP pattern
11	Unable to distinguish fibrosing NSIP and the early UIP pattern
12	NSIP with chronic bronchiolitis, OP, and early, focal, acute bronchopneumonia
13	Cellular NSIP with mild fibrosis and OP
14	Cellular and fibrosing NSIP
15	UIP pattern
16	UIP pattern
17	UIP pattern
18	UIP pattern with lymphocytic infiltrates and follicular lymphoid hyperplasia

Abbreviations: DIP, desquamative interstitial pneumonia; GPA, granulomatosis with polyangiitis; NSIP, nonspecific interstitial pneumonia; OP, organizing pneumonia; UIP, usual interstitial pneumonia