Classification: Chalk is a white, soft rock and a formation of lime stone. For further details compare to gypsum.
Synonyms/Trade Names: Lime Stone.
Key Hazards: None.
Involved Organs: Probably none.
Exposure/Epidemiology: Chalk is used worldwide in cement industries. For further details compare to gypsum.
Thresholds: See under the heading gypsum.
Etiology/Pathophysiology: Chalk is assumed to be inert to the lung parenchyma. Animal experiments failed to demonstrate any fibrogenic potency.
Lung Diseases: Probably none.
Clinical Presentation: Associated specific symptoms are not known.
Radiology: Associated specific findings are not known.
Lung Function: Usually normal findings.
Bronchoalveolar Lavage: Usually normal findings.
Gross: The lungs are of normal color and consistency.
Histology: The alveoli can contain an increased number of macrophages, and collections of brown dust particles may be seen in the lymphatic tissue.
Prognosis: Usually good and without serious sequelae.
Additional Diseases: None.
search Pubmed for Chalk
Kayser K: Analytical Lung Pathology. Springer, Heidelberg, New York (1992)
Worth G, Schiller E: Die Pneumokoniosen. Staufen Verlag, Köln (1954)