PMC4501453_01
Patient's flow-volume loop demonstrating abnormalities in the inspiratory and expiratory limbs. There was no significant difference between pre- (blue) and post- (red) bronchodilator curves. The black squares represent the predicted expiratory flows (25%, 50%, 75%) for this patient. The predicted maximum forced expiratory flow is represented by the blue horizontal line.
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fig1
Both the expiratory and inspiratory phases were abnormal (Fig. 1).
Chest X-ray demonstrating the right tracheal bronchus (red arrow pointing at bronchial orifice).
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fig2
However, upon review, a complete right upper lobe bronchus was seen originating from the trachea (Fig. 2).
Right tracheal bronchus (blue arrow) taking off proximally to the right mainstem bronchus (green arrow).
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Bronchoscopy was performed, confirming the right-sided tracheal bronchus (Fig. 3).
Curved multiplanar reformatted images from the patient's computerized tomography demonstrated the right tracheal bronchus (red arrow) proximal to the carina (blue arrow).
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fig4
Curved multiplanar reformatted images demonstrated the true right tracheal bronchus (Fig. 4).