Gastroscopy helps your doctor evaluate various symptoms that include persistent upper abdominal pain, nausea, vomiting or difficulty swallowing. It is an excellent test for finding and treating the cause of bleeding from the upper gastrointestinal tract.astroscopy helps your doctor evaluate various symptoms that include persistent upper abdominal pain, nausea, vomiting or difficulty swallowing. It is an excellent test for finding and treating the cause of bleeding from the upper gastrointestinal tract.
Cerebrospinal fluid (CSF) is a watery fluid that circulates through the brainâs ventricles (cavities or hollow spaces) and around the surface of the brain and spinal cord. A CSF leak is a condition that occurs when the CSF leaks through a defect in the dura or the skull and out through the nose or ear.erebrospinal fluid (CSF) is a watery fluid that circulates through the brainâs ventricles (cavities or hollow spaces) and around the surface of the brain and spinal cord. A CSF leak is a condition that occurs when the CSF leaks through a defect in the dura or the skull and out through the nose or ear.
Cerebrospinal fluid AKA CSF is produced in the brain by ependymal cells in the chorid plexus, though some of the CSF is produced around blood vessels and ventricle walls in th â¦ e brain.It's not produced by the cerebellum, which controls a person's motor control functions. 4 people found this useful.erebrospinal fluid AKA CSF is produced in the brain by ependymal cells in the chorid plexus, though some of the CSF is produced around blood vessels and ventricle walls in th â¦ e brain.