Endoscopic Ventricular Biopsy Home Treatment Endoscopic Techniques Endoscopic Ventricular Biopsy Patients with tumors or masses in the ventricles or surrounding structures like the pineal gland may benefit with an endoscopic biopsy of the lesion. The biopsy, or Endoscopic Intraventricular Surgery, can be approached through the ventricles and performed along with an ETV. These biopsies can help avoid a larger operation or a blind needle biopsy. Pineal Mass More information about intraventricular tumors Written and reviewed by: The Pacific Neuroscience medical and editorial team We are a highly specialized team of medical professionals with extensive neurological and cranial disorder knowledge, expertise and writing experience. Last updated: April 6, 2020 Schedule an appointment Schedule a consultation or record review via phone or online. icon-quote Get a second opinion Learn more about your treatment options. icon-stethoscope Find a doctor Make an appointment at a center of excellence.