A coal miner develops progressive massive fibrosis (PMF) of the lungs due to long-term coal dust exposure. The disease is classified as:

• A Silicosis
• B Byssinosis
• C Siderosis
• D Coal Workers' Pneumoconiosis (CWP) — black lung disease ✓

Explanation

Coal Workers' Pneumoconiosis (CWP) — 'black lung disease' — is caused by inhalation of coal dust (mixed dust containing carbon, silica, and other minerals). Simple CWP shows small nodular opacities; Progressive Massive Fibrosis (PMF) represents complicated CWP with large fibrotic masses (>1 cm) in the upper lobes. Silicosis results from pure crystalline silica exposure (granite cutters, sandblasters). Byssinosis is from cotton dust (carding rooms). Siderosis is from iron oxide dust (welders) and is a relatively benign pneumoconiosis.

Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.