A modified lateral decubitus position for surgical approaches to midline posterior fossa lesions: technical note.

Although a number of operative positions have been described for approaching midline posterior fossa tumors, all have potential disadvantages and complications. We describe a modified lateral decubitus position for the removal of posterior fossa tumors. The position allows blood and cerebrospinal fluid to drain from the operative wound and provides a straight-on view of the posterior fossa contents. It also allows the surgeon to sit comfortably during tumor removal, thereby reducing operator fatigue. We have found this to be a reliable and valuable approach for posterior fossa pathology.