PMC10494457_01
Chest x -ray in the supine position showing a complete atelectasis of the left lung.
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The arterial blood gas in the supine position showed a hypoxemia (pH 7,44; pO2 8.1 kPa; pCO2 4,3 kPa; bicarbonate 22 mmol/L) and chest x-ray (Fig. 1) showed a complete atelectasis of the left lung.
Complete obstruction of the left main bronchus due to adenosquamous carcinoma.
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Bronchoscopy revealed a complete obstruction caused by adenosquamous bronchial carcinoma (Fig. 2) in the left main bronchus.
Lung perfusion scintigraphy revealed the left lung still showing a perfusion contribution of 30% in recumbent position.
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Lung perfusion scintigraphy in recumbent position(Fig. 3) showed clues for absent hypoxic vasoconstriction, because the left lung still showed a perfusion contribution of 30%.