Anatomy and Surgical Approaches to Lateral Ventricle Tumors

In this chapter, we are reviewing the surgical management of primary CNS-tumors located in the lateral ventricles of the brain. We start with an overview of the spectrum of individual pathologies, clinical signs, and symptoms and touch upon possible imaging-based classifications. After a short recap of the gross anatomy, we take the most frequent tumor of the lateral ventricle, choroid plexus meningioma, as a suitable example to discuss key surgical approaches to the atrium and we discuss pros and cons as well as associated complications of each approach.Based on our experience, we recommend pursuing a trans-sulcal corridor via a superior parietal lobule access for lesions located on the right side, whereas we prefer a parasagittal occipito-parietal access for tumors on the left side. Lastly, we go over the surgical management of a second tumor type, subependymoma, to present its surgical planning and resection strategy.