This book contains description of new procedure called prelacrimal recess approach and real pictures for this new nasal endoscopic sinus procedures that help to view a hidden areas of anterior maxillary sinus wall, detailed anatomy of the lateral nasal wall and nasal sinusis in a simple manner with illustrative figures, also this procedure was compared to the usual endoscopic sinus surgery, and show what the benefits and risks of prelacrimal recess approach, and it is role to complete eradication of anterior maxillary sinus lesions.