Evaluation of intraoperative bleeding during an endoscopic surgery of nasal polyposis after a pre-operative single dose versus a 5-day course of corticosteroid.

Nasal polyps are associated with the inflammation of the nasal cavity and the sinus mucosa. When medical treatment cannot solve a patient's problem, a functional endoscopic sinus surgery may be indicated. Bleeding impairs the surgery field during operation and increases the operation risk and time.