Applied anatomy of the lateral ventricle and the third ventricle:neuroendoscopic study

Objective: To investigate the anatomic and imageologic characteristics of lateral ventricle and the third ventricle by neurendoscopy and to provide anatomic basis for clinical applications. Methods: The anatomic characters of the lateral ventricle and the third ventricle were observed in 10 cadavers and 25 hydrocephalus patients, while the endoscopic observation of lateral ventricle and the third ventricle were performed recorded. Results: The body and front horn of the later ventricle could be observed via front horn approach which is the most popular approach for endoscopic third ventriculostomy. The Y shape structure of the Monroe hole was the significant mark to observe and locate the ventricle. The corresponding parts of lateral ventricle and choroid plexus could be observed via the approaches of occipital horn, triangular area and temporal horn of the ventricle. Conclusions: The view field is the largest via the front horn approach that is commonly used to the endoscopic operation of the lateral ventricle and the third ventricle. The occipital horn approach is useful for endoscopic operation of the posterior part and triangular area of the lateral ventricle. The approaches through triangular area and occipital horn are used seldom.