Question

when evaluating a posteroanterior (pa) chest radiograph, a radiologist notes an absence of lung markings and a pleural line on the patient’s right side. which of the following pathologies is the most likely cause for this appearance? pneumonia pneumothorax pleurisy croup

Explanation:

On a PA chest radiograph, an absence of lung markings and a visible pleural line on one - side are characteristic findings of pneumothorax. Pneumonia typically shows infiltrates, pleurisy may show pleural thickening or effusion, and croup is mainly a disease affecting the upper airway and not typically seen with these specific chest radiograph findings.

Answer:

B. Pneumothorax