Transtemporal Mini-trephination Approach: A Novel Corridor to Expose a Septated Lateral Frontal Sinus

Introduction: The lateral frontal sinus is one of the most challenging areas to approach in the paranasal sinuses. Various approaches, such as endoscopic trans-nasal frontal sinusotomy and mini-trephination, fail to completely control this area; thus, we devised a novel transtemporal mini-trephination (TTMT) modification in an attempt to improve exposure.