The frontal sinus has remained a challenge to treat for even the experienced otolaryngologist. The surgical anatomy is difficult in primary sinus surgery, but even more so, in revision surgery. However, many of the surgeries done to treat the frontal sinus have been in a revision setting. Important structures surrounding the sinus i.e. skull base, orbit, anterior ethmoid artery are also cause for some increased stress when operating. This course will discuss the important sinus anatomy, including revision sinus surgery anatomy, treatment algorithms including medical and surgical options, and multiple video clips will be shown to enhance the presentation. Finally, we will show and discuss advanced surgical technique including Draf I through Draf III surgery. Also, the post-operative care will be debated with the inclusion of when to stent the sinus or not.