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Table 2 Summary of the BAL and pathological characteristics of each patient

From: Does transbronchial lung cryobiopsy give useful information in asthmatic patients?

Patient

BAL

Bronchiolar wall

Peribronchiolar tissue

Alveolar spaces

Vasculitis

1

Neutrophilic (72%) and eosinophilic (6%) alveolitis

Goblet metaplasia and eosinophilic infiltration of mucosa and submucosa; thickening of the basal lamina

Nodular lymphoid inflammation and scattered non-necrotizing granulomas

No inflammation

No

2

Lymphocytic (85%) alveolitis

Goblet metaplasia and eosinophilic infiltration of mucosa and submucosa; thickening of the basal lamina

Nodular lymphoid inflammation with scattered eosinophils

Mild lymphoid interstitial inflammation with scattered eosinophils; mild macrophage accumulation in the alveolar spaces

No

3

Eosinophilic (52%) alveolitis

Goblet metaplasia and eosinophilic and lymphocytic infiltration of mucosa and submucosa. A thickening of the basal lamina. In the bronchiolar lumen: accumulation of epithelial cells, eosinophils and mucous.

Lymphocytic and eosinophilic inflammation mainly around small vessels

Mild interstitial inflammation consisting of lymphocytes and scattered eosinophils

No