PMC6739879_01
a-c Preoperative computed tomography scans show bilateral chronic subdural hematoma (CSH) in the posterior fossa associated with moderate hydrocephalus. d The preexisting CSH in the supratentorial region demonstrated no change.
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F1
A CT scan taken on his admission demonstrated an appearance of bilateral CSH in the posterior fossa associated with hydrocephalus (Fig. 1).
a A preoperative axial magnetic resonance imaging (MRI) T1-weighted image shows bilateral chronic subdural hematoma (CSH) with niveau formation (black arrowheads). b A coronal MRI scan, flair image, demonstrates the continuity of the posterior fossa CSH through the supracerebellar area (white arrowhead).
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F2
Magnetic resonance imaging showed niveau formation in the CSH and the continuity of the right and left hematomas through the supracerebellar area (Fig. 2).
a A 3-dimensional bone window image of the computed tomography (CT) scan shows the location of the burr hole near the transverse-sigmoid junction. b A postoperative CT scan 3 months after surgery demonstrates disappearance of the chronic subdural hematoma in the posterior fossa.
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F3
As his consciousness deteriorated rapidly, urgent burr hole irrigation for the posterior fossa CSH was performed under local anesthesia in the supine position (Fig. 3a). Follow-up CT scans taken 3 months after surgery demonstrated no recurrence of the CSH in the posterior fossa (Fig. 3b).