History

Introduction

Frontal sinus surgery remains perhaps the most challenging aspect of functional endoscopic sinus surgery (FESS) due to the complex variable anatomy of the frontal sinus and its drainage pathway, proximity of
cribriform plate medially, orbit laterally and anterior ethmoidal artery (see Figure 1) as well as predilection for frontal recess stenosis. Poorly executed surgery can be extremely unforgiving and lead to complications both in the short and long term. Therefore, a clear appraisal of the common cellular variations of the frontal recess is pivotal in constructing a clear surgical plan preoperatively.