PMC7409484_01
a-c Brain CT and heavily T2 spine MR. a No abnormal signs on brain CT. b, c The arrow in heavily spine MR shows the suspected fistula signal between at T11 level
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Fig1
Brain CT did not present any positive findings (Fig. 1). 
d-e Myelography. d-e The arrows show the contrast agents leaking from the subarachnoid space to the thorax
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Fig2
To further confirm the diagnosis of PSF, myelography was performed and reassured the pleural-subarachnoid fistula at T11 level (Fig. 2).
f-i Chest X-ray and brain MRI. f, g The MRIs show no ventriculomegaly or paraventricular edema after removal of cisternal drainage. h, i The chest X-ray show the no effusion in the thorax
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Fig3
Two more weeks later, we removed the chest tube and elevated the level of the lumbar cisternal drainage gradually, and there was no pleural effusion ever (Fig. 3). An MR scan of the head did not show dilation of the ventricle and paraventricular edema (Fig. 3).