PMC8216685_01
Head CT. Severe dilation of the ventricular system, involving the
third ventricle and lateral ventricles with transependymal edema and a
multicystic lesion located in the subarachnoid space at the level of the
lateral surface of the left cerebellar hemisphere.
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A head CT scan revealed ventricular dilation and the presence of a cerebellar cyst (Figure 1); the magnetic resonance imaging (MRI) of the brain showed a left cerebellar cyst along with severe dilation of the ventricular system compatible with hydrocephalus (Figure 2), so that a ventriculoperitoneal shunt was performed.
Axial Magnetic Resonance imaging of the brain. Flair (left) and T1
contrast (right) images with a multicystic lesion located in the
subarachnoid space at the level of the lateral surface of the left
cerebellar hemisphere. Note the absence of a scolex and the "mass
effect".
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A head CT scan revealed ventricular dilation and the presence of a cerebellar cyst (Figure 1); the magnetic resonance imaging (MRI) of the brain showed a left cerebellar cyst along with severe dilation of the ventricular system compatible with hydrocephalus (Figure 2), so that a ventriculoperitoneal shunt was performed.
Hematoxylin-Eosin staining of a biopsy specimen from the cerebellar
cyst: A) Upper left image. Outer edge of the cyst containing an intense
inflammatory infiltrate. Larger image. Wall of a cysticercus cyst in
small magnification (2.52 x); B) Wall of a cysticercus cyst with
cuticular (1), cellular (2), and reticular (3) layer (12.6 x). The
cuticular layer shows small, villous protrusions, the cellular layer is
located just below the cuticular layer, and the reticular layer is the
larger one, containing a loosely arranged matrix, and excretory
canaliculi.
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Due to the clinical deterioration of the patient and the lack of a clear diagnosis, a biopsy of the cyst was performed with evidence of a cysticercus cyst (Figure 3).