What Is the Earliest Sign of a Left-Sided Pleural Effusion

question 45

Multiple Choice

What is the earliest sign of a left-sided pleural effusion on an upright chest radiograph?

• A) An increased distance between the inferior margin of the left lung and the stomach gas bubble
• B) Inability to see small pulmonary blood vessels over the left lower lung
• C) A widened mediastinum
• D) Elevation of the right hemidiaphragm

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