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Enlarged tumefactive perivascular, or Virchow-Robin, spaces and hydrocephalus: do we need to treat? Illustrative cases

Belal Neyazi, Vanessa Magdalena Swiatek, Klaus-Peter Stein, Karl Hartmann, Ali Rashidi, Seraphine Zubel, Amir Amini, and I. Erol Sandalcioglu

instability. Diagnostic testing included MRI, which revealed a multicystic lesion in the area of the right basal ganglia and extending into the mesencephalon and pedunculus cerebelli ( Fig. 1B ). Importantly, there were no signs of hydrocephalus. Prior to presenting at our clinic, the patient had already undergone endoscopic third ventriculostomy and biopsy at a different hospital. Postoperatively, there was neither improvement nor a worsening of symptoms, and MRI findings remained stable. This case underscores the challenges associated with managing multicystic lesions in

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Endoscopic resection of a giant colloid cyst in the velum interpositum: illustrative case

Mahdi Arjipour, Mohammad Gharib, and Mohamadmehdi Eftekharian

into consideration. Operation The patient underwent surgery through an endoscopic approach to the lesion. After entering the ventricular space from the right side, the lesion was observed. At first, a cerebrospinal fluid sample was taken and an endoscopic third ventriculostomy was undertaken for hydrocephalus treatment. Then, after the mass wall opening at the superior part, there was a firm nonsuctionable solid gray-yellow material inside the lesion, which was not typical for a colloid cyst. Thus, the solid lesion content was resected in a piecemeal manner