Revision endoscopic frontal sinus surgery is a challenging procedure that should be undertaken only by the experienced sinus surgeon. • Evaluation and understanding of the frontonasal outflow tract in the setting of previously surgically altered anatomy is essential. • Choice of procedure for the revision frontal sinus surgery depends not only on careful preoperative evaluation of available computed tomography radiography, but also on the underlying pathology. • Careful postoperative debridement and monitoring is essential for the success of any revision frontal sinus operation.
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