Hypersensitivity Pneumonitis Radiology

Hypersensitivity pneumonitis (HP) is an inflammatory reaction in the lungs caused by inhaling organic dust, mold, or other allergens. On imaging studies like chest X-rays or CT scans, HP may appear as ground-glass opacities, nodules, or areas of consolidation. These patterns indicate inflammation and damage in the lung tissue. Early detection is vital, as ongoing exposure can lead to chronic lung disease. Radiologists look for these signs to help diagnose the condition and recommend avoiding the triggering substances to improve lung health.