Resection of a left posterolateral thalamic cavernoma with the Nico BrainPath sheath: Case report, technical note, and review of the literature

•Cavernomas of the thalamus and basal ganglia may lead to debilitating motor dysfunction.•Surgical resection is associated with a high risk of neurologic morbidity.•Tubular retractors are a minimally invasive alternative to microsurgery.