PMC3658224_01
Bilateral hyperlucency is visible in this X-ray.
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Physical examination and laboratory findings were within normal limits; chest X-ray showed bilateral hyperlucency (Figure 1).
Left and right arches in the trachea are equal in size, but the right arch was 5 mm higher than the left.
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Left and right arches were equal in size although the right arch was located 5 mm higher than the left (Figure 2).
Computed tomography images of the patient's trachea in relation to neighbouring tissues.
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A three-dimensional CT scan was taken (1) to obtain better anatomic views and (2) to clearly identify its relation to neighboring structures (Figure 3).