title: Atypical mast cell degranulation and focal hydropic degeneration of venular endothelium in diffuse fibrosing alveolitis.
abstract: Atypical scroll-like and tubular degranulation of mast cells closely associated with focal endothelial hydropic degeneration is reported in human lung from 4 patients with diffuse fibrosing alveolitis in which the predominant abnormality was hyperplasia and desquamation of type 2 pneumocytes.
mesh_terms: D003594:Cytoplasmic Granules / Q000648:ultrastructure*; D006801:Humans; D008407:Mast Cells / Q000648:ultrastructure*; D008854:Microscopy, Electron; D011658:Pulmonary Fibrosis / Q000473:pathology*