case_images: PMC10806387_01
case_images: Initial CT revealing acute left-sided intraparenchymal haemorrhage with intraventricular extension and mass effect.
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case_images: An urgent computed tomography (CT) scan of the brain showed a large intracranial haemorrhage with intraventricular bleeding and hydrocephalus (Fig. 1).
case_images: Contrast-enhanced T1-weighted MRI scan showing presence of the intraparenchymal cyst and surrounding vasogenic oedema.
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case_images: The patient was transferred back to the acute hospital, where an urgent magnetic resonance imaging (MRI) scan demonstrated a likely CSF cyst around the shunt catheter, with subacute haemorrhage within the cyst (Fig. 2).
case_images: CT scan performed 41 days after shunt revision, showing resolution of the periventricular cyst.
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case_images: A progress CT done 41 days after the shunt revision showed no further evidence of the cyst, although ventricular dilatation persisted (Fig. 3).