The reader is asked to clearly define the difference between acute rhinosinusitis (ARS) and CRS. Acute rhinosinusitis is due to acute bacterial and/or viral infection, and intracranial and/or intraorbital complications nearly always occur in the setting of ARS. Symptoms often predate the complications by only 7.5 days.1 Such complications are often absolute indications for surgical intervention, frequently involving ESS. These complications are exceedingly rare in CRS, which is the focus of this article.
Schlosser RJ, Harvey RJ. Commentary. Arch Otolaryngol Head Neck Surg. 2011;137(7):702–704. doi:10.1001/archoto.2011.112
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