A Novel Classification System for the Anatomical Variations of the Infraorbital Ethmoidal (Haller) Air Cells.

Infraorbital ethmoidal air cells (IOEAc) are ethmoidal cells that pneumatizes inferior to the orbital floor and lateral to a line parallel to the lamina papyracea. Studies have shown considerable anatomical variation with different extensions in humans. To identify and categorize the anatomical variations of the IOEAc creating a new, comprehensive variation classification system.

Endoscopic assisted microscopic posterior cordotomy for bilateral abductor vocal fold paralysis using radiofrequency versus coblation.

Purpose: To assess the outcomes of endoscopic assisted microscopic posterior cordotomy for bilateral abductor vocal fold paralysis (BAVFP) using radiofrequency versus coblation.

Methods: This was a randomized prospective cohort study that carried out on 40 patients with BAVFP who were subjected to endoscopic/assisted microscopic posterior cordotomy. The patients were randomly allocated into two groups: group (A) patients were operated with radiofrequency, and group (B) patients were operated with coblation.