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Fig 1. Complex hydrocephalus (patient 3). Axial T1-weighted spin-echo (SE) (A) and T2-weighted fast spin-echo (FSE) (B) images showing unilateral ventriculomegaly and midline cyst at the neonate stage and signs of corpus callosum agenesis. Axial (C) and sagittal (D) T1-weighted SE images at 1 month of life, after Gd-DTPA injection via transfontanelle ventriculostomy, show isolated right ventricular enlargement with lack of communication either with the left ventricle or with the midline cyst. Uniportal endoscopic approach was elected for the treatment of both the interhemispheric cyst and the isolated right ventricle.
