Which of the following findings on the chest film is associated with hypertrophy of the airways due to heavy cigarette consumption?

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Tram tracks are thickened bronchial walls seen on a chest X-ray associated with chronic bronchitis due to heavy cigarette smoking. Hypertrophy of the airways due to cigarette smoking can cause chronic inflammation, thickened airway walls, and airway remodeling, resulting in decreased airflow and ventilation-perfusion mismatch. An enlarged right ventricle may be seen in chronic obstructive pulmonary disease (COPD) due to pulmonary hypertension, but this is not specific to cigarette smoking. Kerley B lines are short horizontal lines in the lungs seen in heart failure, and air bronchograms are the visualization of air-filled bronchi within consolidated lung tissue, not specific to cigarette smoking.

Which of the Following Findings on the Chest Film Is