title: [Application of polarized microscopy and analytic electron microscopy in pneumoconiotic pathologic examination].
abstract: 38 cases of pneumoconiotic pathologic slides have been reexamined by polarized microscopy, among this, 3 cases (every 1 case of silicosis, asbestosis, cement dusts pneumoconiosis) have investigated by analytic electron microscopy. Authors presented, crystal silica and asbestos fiber may be showing under polarized light, and often associated with carbon dusts or fibrotic proliferation. So that, polarized microscopy may be as a preliminary detect method for silica and uncoated asbestos fiber from histologic slide, according to its dimension, color, lightness, morphologic feature and position were differential diagnosis from other positive substance under routine pathologic examination, further demonstration must to be reduced to ashes and re-observation under polarized microscopy. Also we selected 3 cases of silicosis, asbestosis, cement dusts pneumoconiosis specimen prepared to ultramicrotomic slides and examined by H-800 electron microscopy, when discovered some particles (such as crystal, non-crystal or fibrotic dusts) in cytoplasm of macrophages or interstitial space then used EDAX estimated. Its elements distribution were conformity with dusts (silica, asbestos, cement dusts).
authors: B S
authors: BS
authors: Wang
mesh_terms: D000874:Anthracosilicosis / Q000473:pathology; D001195:Asbestosis / Q000473:pathology; D004577:Electron Probe Microanalysis; D006801:Humans; D008859:Microscopy, Polarization; D011009:Pneumoconiosis / Q000473:pathology*; D012829:Silicosis / Q000473:pathology