Fibrosis

Fibrosis is the buildup of stiff, scar-like connective tissue inside an organ in response to repeated injury or inflammation. In the lungs, fibrosis replaces the soft, elastic tissue needed for breathing with thickened scar tissue that does not transfer oxygen well. Once formed, fibrosis is generally permanent, though its progression can sometimes be slowed.

Origin

From the Latin fibra (fiber) and the Greek suffix -osis (condition or disease process). The term entered medical use in the 19th century as pathologists began describing tissues thickened by abnormal collagen deposits.

Significance in Asbestos Context

Fibrosis is the central injury in asbestosis and also appears in the pleura as pleural plaques and diffuse pleural thickening. When asbestos fibers lodge in the lung, the body's attempts to wall them off trigger ongoing inflammation that lays down scar tissue, which stiffens the lungs and reduces oxygen exchange. The pattern, distribution, and severity of fibrosis on CT scans and biopsy are key to distinguishing asbestos-related disease from other causes of lung scarring such as idiopathic pulmonary fibrosis (IPF), and that distinction often matters both for treatment decisions and for a legal claim that ties the disease to asbestos exposure.

Example Sentence

The radiologist's report described bilateral lower-lobe fibrosis with pleural plaques, a pattern her pulmonologist said was consistent with prior asbestos exposure rather than idiopathic pulmonary fibrosis.

Related Terms

Asbestosis, Pleural Plaques, Diffuse Pleural Thickening, Interstitial Lung Disease, Honeycombing, High-Resolution CT (HRCT)

Notes

• Ask your pulmonologist whether your fibrosis pattern is more consistent with asbestosis, IPF, or another cause. The answer should be documented in your chart and supported by HRCT findings.
• Request and preserve copies of all chest CT scans (the actual images on disc, not just reports), pulmonary function tests, and any biopsy pathology; these are core evidence in both treatment planning and legal claims.
• Pulmonary function tests (FVC, DLCO) measure how much fibrosis is affecting your breathing. Track these over time, because progression is relevant to both prognosis and damages.
• If fibrosis is advancing, ask whether antifibrotic medications (such as pirfenidone or nintedanib) are appropriate for your specific diagnosis.
• Provide your doctors with a detailed occupational and household exposure history; without it, asbestos-related fibrosis is often misdiagnosed as idiopathic.