What is the result of biopsy in HP?

Biopsy taken for dx, distinctive histopathology according to disease stage surgical biopsy ez diagnosis than transbronchial Acute HP alveolar and interstitial accumulation of leukocytes, fluids and macrophages centrilobular. Subacute/chronic: predominant lymphocytes plasma cell, macrophage infiltration (alveolar) - 70% loose non-caseating granulomas, 65% shows degres of fibrosis, 60% bronchiolitis obliterans)