Definition summary: Pneumoconiosis (especially coal workers’ pneumoconiosis) is a chronic lung disease in which fine coal (mining) dust accumulates in the lungs over many years, causing fibrosis (scarring) of the lung tissue and gradually resulting in shortness of breath.
Causes and pathophysiology: Inhaled coal dust accumulates in the alveoli and pulmonary interstitium, leading to chronic inflammation and progressive fibrosis. Exposure to dust mixed with silica can progress to more severe fibrosis (progressive rapidly progressive fibrosis/progressive massive fibrosis, etc.). Smoking accelerates the progression of symptoms.
Main symptoms: Progressive shortness of breath during exertion, chronic cough, black (carbonaceous) sputum; many cases are asymptomatic in the early stages. Complications may include chronic bronchitis, increased susceptibility to tuberculosis, respiratory failure due to reduced lung function, and an increased risk of lung cancer.

Definitive treatment: Prevent exposure to the causative substance (dust) — this is the most important measure. Already-progressed fibrosis often cannot be cured.
Medication and supportive therapy:
- Bronchodilators (for symptom relief — inhaled beta-2 agonists, anticholinergic drugs, etc.)
- Oxygen therapy (when hypoxemia is present, to improve daily life and exercise capacity)
- Chest physiotherapy (to promote sputum clearance)
- Appropriate antimicrobial/anti-tuberculosis treatment when an infection, especially tuberculosis, is present
Treatment for severe or end-stage disease:
- Pulmonary rehabilitation programs (exercise therapy and breathing training)
- Long-term oxygen therapy and intensified bronchial treatment if cardiac or respiratory failure progresses
- Consideration of lung transplantation when selectively indicated (evaluation at a specialized center)
Prevention and lifestyle management:
- Stop smoking immediately
- Regular prevention of respiratory infections (influenza and pneumococcal vaccines are recommended)
- Follow occupational safety measures (respiratory protective equipment and dust-reduction measures)
Precautions and risk of complications:
- The disease may continue to progress if dust exposure continues (respiratory failure in severe cases)
- Monitoring for complications such as tuberculosis, chronic bronchitis, pneumonia, and lung cancer is necessary

Items to prepare:
- List of currently used medications (prescription drugs, over-the-counter medications, and supplements)
- Copies of previous chest X-rays/CT scans and pulmonary function test (PFT) results, if available
- Record of recent symptom changes (when they began, degree of shortness of breath during exercise, sputum color and amount)
- Occupational history (duration of exposure and work environment), smoking history (past and current), and vaccination records
Information that is useful to provide to medical staff during the visit:
- Years when occupational exposure began and ended, and whether protective equipment was used
- Activities or times of day when shortness of breath worsens
Sample questions (the patient may submit these in advance or write them down):
- How much has the disease progressed based on comparison of my recent test results?
- What are the criteria for needing oxygen therapy?

How is the current stage of this disease evaluated? What is the expected prognosis?
What are the goals and expected effects of the recommended treatments (medication, rehabilitation, and oxygen therapy)?
How does quitting smoking affect the progression of the disease?
Which vaccinations are needed? What are the recommended timing and precautions for vaccination?
Whether can I return to work, and what safety conditions would be required?

To what extent do my chest X-ray/CT and pulmonary function test results deviate from the normal range (please explain using simple values or stages)?
If I have a record of exposure to silica or other hazardous substances, how can I check whether I am eligible to enroll in an occupational disease compensation or management program based on this exposure?

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