Fourth ventricle neurocysticercosis with hydrocephalus: A case report and literature review

Figure 1 Preoperative magnetic resonance imaging. A-D: The initial magnetic resonance imaging (MRI) revealed a cystic lesion within the fourth ventricle, characterized by an eccentrically positioned scolex and minimal contrast enhancement. The lesion is indicated by an orange arrow; E-H: A subsequent MRI, performed 5 weeks later, demonstrated a marked increase in the cyst size (A and E: Axial T2-weighted sequences; C and G: Sagittal T2-weighted sequences; B and F: Axial post-contrast sequences; D and H: Sagittal post-contrast sequences).

Figure 2 Intra-operative images. A: Posterior fossa open approach; B: The cyst (*) was identified in the fourth ventricle and dissected from the ependyma; C and D: En bloc removal of the cyst without rupture. PICA: Posterior inferior cerebellar artery.

Figure 3 Postoperative magnetic resonance imaging. The postoperative magnetic resonance imaging demonstrated complete cyst resection without complications. A: Axial T2-weighted sequence; B: Sagittal T2-weighted sequence; C: Axial post-contrast sequence.