• Malte Ottenhausen, Ullrich Meier, Anja Tittel, and Johannes Lemcke.
• Clinic for Neurosurgery, Unfallkrankenhaus Berlin, Berlin, Germany.
• J Neurol Surg A Cent Eur Neurosurg. 2013 Dec 1; 74 Suppl 1: e242-7.

Background And ImportanceEven though dilated Virchow-Robin spaces (VRS) are a very rare entity, they can compel the clinician to start immediate intervention in the case of acute onset of symptoms. To allow a well-balanced management decision, we compiled a summary of all cases published in the literature and discuss the different methods and indications for neurosurgical intervention in relation to dilated VRS.Clinical PresentationWe report a case of a 43-year-old female patient who came to admission after syncope with a history of unspecific neck pain, fatigue, diplopia, and dizziness. Dilated VRS type III causing a noncommunicating hydrocephalus were found to be responsible. Although the patient was initially awake, within 72 hours after admission, a deterioration of consciousness and repeated vomiting were observed. The patient underwent an urgent endoscopic third ventriculostomy (ETV) and was discharged in a good condition.ConclusionTo the best of our knowledge, the case presented here is the first case of acute decompensation of a noncommunicating hydrocephalus caused by dilated VRS. Neurosurgical intervention is required in cases of noncommunicating hydrocephalus caused by giant tumefactive VRS. The treatment options are mono- or biventricular shunt surgery or ETV. Because ETV provides the possibility of cyst fenestration and membrane sampling, it appears to be the most advantageous treatment option.Georg Thieme Verlag KG Stuttgart · New York.

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