World Neurosurg
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Massive intracerebral and intraventricular hemorrhages require aggressive and rapid management to decrease intracranial hypertension. The amount of intraventricular blood is a strong prognostic predictor, and its fast removal is a priority. Neuroendoscopy may offer some advantages over more traditional surgical approaches. ⋯ Early neuroendoscopic surgery is a feasible approach, allowing, in most instances, rapid clinical and radiological improvement.
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The management of hydrocephalus associated with a posterior fossa tumor is debated. Some authors emphasize the advantages of an immediate tumor removal that may normalize the cerebrospinal fluid (CSF) dynamics. However, in clinical practice, the mere excision of the lesion has been demonstrated to be accompanied by a persisting hydrocephalus in about one third of the cases. Preoperative endoscopic third ventriculostomy (ETV) offers several advantages. It may control the intracranial pressure (ICP), avoid the necessity of an emergency procedure, allow appropriate scheduling of the operation for tumor removal, and eliminate the risks related to the presence of an external drainage. The procedure also reduces the incidence of postoperative hydrocephalus. A final advantage, more difficult to weight, but obvious to the neurosurgeon, is the possibility to remove the lesion with a relaxed brain and normal ICP. In the postoperative phase, ETV can be used in case of persisting hydrocephalus, both in patients who underwent only the excision of the tumor and in those whose preoperative ETV failed as a consequence of intraventricular bleeding with secondary closure of the stoma (redoETV). The main advantage of postoperative ETV is that the procedure is carried out only in case of persisting hydrocephalus; its use is consequently more selective than preoperative ETV. The disadvantage consists in the common use of an external CSF drainage in the first few postoperative days, which is necessary to control the pressure and for ruling out those cases that reach a spontaneous cure of the hydrocephalus. ⋯ Preoperative ETV constitutes an effective procedure for controlling the hydrocephalus associated with posterior fossa tumors. It might lower the rate of persistent postoperative hydrocephalus and result in a short hospital stay. Low rates of patients requiring an extrathecal-CSF shunt device are also reported by authors who utilize ETV postoperatively. As, however, the assessment of the persistent hydrocephalus in these children is based on prolonged ICP monitoring through an external CSF drainage, their results are weighted by a major risk of infective complications and longer hospital stay.
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To term and describe neuroendoscopic techniques. ⋯ Endoscopic techniques are a valuable addition to the neurosurgeon's armamentarium. Endoscopes are especially beneficial in deep and narrow surgical approaches and when "looking around a corner" is required.
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Endoscopy for hydrocephalus caused by infectious diseases presents clear challenges to the surgeon. Hydrocephalus caused by tuberculous meningitis is a good model to explore many of the issues that should be considered in the management of these patients. Tuberculous hydrocephalus may be communicating or noncommunicating management options include medical treatment (for communicating hydrocephalus), ventriculoperitoneal shunting, and endoscopic third ventriculostomy. ⋯ However, this also must be weighed against the surgical and long-term complications associated with the procedures used. There are specific endoscopic challenges that occur as the result of abnormal anatomy and the fact that hydrocephalus presents during the acute phase of the disease, rather than being postinfectious. In this article we examine the arguments for various therapeutic approaches and discuss the gathering experience in the literature about endoscopy in tuberculous meningitis in the context of overall management options.
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The management of complex hydrocephalus is challenging. There is no consensus of the best treatment for isolated fourth ventricles, arachnoid cysts, and multiloculated hydrocephalus, although the avoidance of multiple shunts is desirable. We reviewed our experience with the use of endoscopic techniques to simplify complex multicompartmental hydrocephalus to determine its efficacy and safety. ⋯ Endoscopic simplification of complex hydrocephalus enables dependence on only a single shunt in the majority of patients, and a significant proportion achieve shunt independence. Endoscopic management should be considered before the placement of a second shunt, and some cases require staged endoscopic procedures to adequately communicate multicompartmental hydrocephalus.