periventricular
per i ven tric u lar |ˌperəvenˈtrikyələr ˌpɛrəvɛnˈtrɪkjələr | ▶noun Anatomy & Medicine situated or occurring around a ventricle, esp. a ventricle of the brain.
periventricular |ˌpɛrɪvɛnˈtrɪkjʊlə | ▶noun Anatomy & Medicine situated or occurring around a ventricle, especially a ventricle of the brain.