Pathology MCQ Answer 499

The correct answer is E. anthracosis

Anthracosis (coal worker's pneumoconiosis) is a diffuse nodular deposition of dust in the lungs as a result of a long term exposure to bituminous or anthracite coal dust in coal mining. In simple coal workers pneumoconiosis, coal dust is widely distributed throughout the lungs leading to the development of coal “macules“ around the bronchioles. Later on a mild dilatation known as focal dust emphysema also occurs; however it does not extend to the alveoli and is not associated with airflow obstruction. However, each year about 1- 2 % of miners with simple anthracosis go on to develop progressive massive fibrosis, which can sometimes develop after the exposure has ceased, or it may progress without further exposure.

Category: Pathology MCQs