Sinus surgery remains an issue of discussion. We lack data on a number of important issues. In this issue of the journal Jiang et al. show that 67 % of their patients who underwent FESS for CRS had OSAS (of which more than half moderate to severe) but only 38% complained of daytime sleepiness irrespective of BMI. The OSAS was also not correlated with the severity of rhinosinusitis, SNOT-20 score, nasal obstruction score, endoscopic score, CT score, and smell function. It could be an argument for FESS although unfortunately the authors did not report whether the OSAS decreased after FESS (1) . In position papers and guidelines like EPOS2012 or ICON it is suggested to perform sinus surgery when "optimal medical treatment" does not result in relevant reduction of symptoms (2,3) . When surgery is considered, usually a minimum period of medical treatment of 3 months is suggested unless the symptoms are very severe, e.g. in massive nasal polyps or when complications, like mucoceles (tend to) occur. In a recent Cochrane review, however, the evidence does not show that surgery is better than medical treatment in terms of patient-reported symptom scores and quality of life measurements (4) . On the other hand there are indications that early surgery (< 12 months after start of the symptoms) improves the outcomes (5,6) . Recent cluster analysis performed in patients eligible for surgery who choose to be operated or not (based on personal preference, not randomization) indicated that based on age, SNOT-22 score, and lost productivity over 90 days patient can be clustered in groups that benefit more from surgery than others (7,8) . When deciding whether FESS is the best option, there is a lot of debate which outcomes are most relevant to measure. In this issue of the Journal Hopkins et. al. report on a survey in which patients and practitioners were asked to list the 3 outcomes from treatments they considered to be most important (9) . Interestingly, 73% suggested symptoms of CRS to be the most important and only 9% concerned quality of life, 4% reducing the need for further treatment and 4% side effects of treatment. The questionswere asked very open: "What results from treatments are most important to you (for patients)?" and "what are the most important outcomes that you want from treatments for people with rhinosinusitis (for health professionals". It would be interes-the hard work of many of us has tremendously increased our knowledge to better inform the patient when FESS is a good option to treat CRS we also still have a lot to learn and I hope to inspire all of you to contribute to the development of our common knowledge.