[Grading system for nasosinusal polyposis treated by functional endoscopic surgery]

A system for grading nasosinusal polyposis treated by functional endoscopic sinus surgery is needed. We propose our CER system, which was designed for easy use and reliable classification of polyposis involvement. Four levels, from zero to four, are added as suffixes to three letters. These levels indicate increasing intensity and are used to categorize the clinical (C), endoscopic (E) and radiological, (R) grade of polyposis. The same system was used for postoperative follow-up and criteria were established for defining the surgical result as good, average, or poor.