Inorganic fibers in lung tissue from patients with pleural plaques or malignant mesothelioma.

Abstract
The concentration of inorganic [abestos] fibers in the lungs of patients with malignant mesothelioma and pleural plaques was compared to that of patients without cancer or chronic respiratory diseases. The fiber concentrations were determined by scanning electron microscopy and given as number of fibers per gram of dried tissue. A statistically significant difference in inorganic fiber content was found between the different groups.