PMC8067619_01
Computed tomography on admission showing tension pneumoventricles (red arrow)
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His pupils became unequal (left 5 mm and right 2 mm), and an urgent CT brain done showed increased left lateral ventricular distension due to pneumoventricle and still distended frontal ventricle with significant brain edema (Figure 1).
A computed tomography post-external ventricular drain (day 4) image showing resolved tension pneumoventricles (red arrow)
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The follow-up CT brain on day four showed decreased distension of the lateral ventricle with a decreased amount of pneumocephalus (Figure 2).