Retrosigmoid approach for resection of an extraventricular choroid plexus papilloma

“Retrosigmoid approach for resection of an extraventricular choroid plexus papilloma in the cerebellopontine angle“ Lee A. Tan, MD, Ricardo B. Fontes, MD, PhD, and Richard W. Byrne, MD Department of Neurosurgery, Rush University Medical Center, Chicago, Illinois Choroid plexus papillomas (CPP) are uncommon benign brain tumors that usually arise in the fourth ventricle in adults and lateral ventricles in children. Extraventricular CPPs are rare and can be found primarily in the cerebellopont