This study aimed to compare Endoscopic Sinus Surgery with and without image guidance, analyzing a number of parameters that can impact efficacy in cases of nasal polyposis.

Endoscopic sinus surgery (ESS) is a treatment of choice for rhinosinusitis (CRS), sinonasal polyposis and in cases of skull base diseases. Despite the availability of excellent nasal telescopes and high-resolution preoperative computed tomography (CT), incidence of complications in endoscopic sinus surgery is of 0-1.5% for the major and 1.1-20.8% for the minor.

Electromagnetic and optical localization systems both enable real-time detection of instrument position in a 3D imaging repository. At present, such repositories are exclusively based on CT acquisitions reformatted to obtain a series of slices in three dimensions. A software interface matches the imaging repository to a peroperative spatial repository in which the instrument can be located.

Inclusion Criteria:

• Age from 15 to 70 years.
• Both sex.
• Patients with nasal polyposis undergoing endoscopic sinus surgery (ESS) whether primary or revision cases.

Exclusion Criteria:

• Patients with nasal polyposis not undergoing ESS.
• Patients with any severe cardiac diseases, pregnant females, transplant patients and patients with psychiatric illness.

This Prospective comparative study was carried out on 40 patients aged from above 15 and below 70 years old, both sexes, with nasal polyposis undergoing ESS whether primary or revision cases. The study was done after approval from the Ethical Committee Al Azhar University, Cairo, Egypt.

The data will be available upon a reasonable request from the corresponding author after the end of study for one year.

After the end of study for one year.

The data will be available upon a reasonable request from the corresponding author.