Bilateral antrochoanal polyp: case report, literature review and clinical guidelines

Antrochoanal polyps are unilateral benign lesions that arise within the maxillary sinus antrum. The purpose of this study was to review the clinical characteristics and treatment of antrochoanal polyp (ACP). A retrospective analysis was performed to investigate the case of one patient with an extremely rare bilateral polyp with a high incidence of recurrence. ACPs account for approximately one-third of polyps occurring in children. Most of them are unilateral. The recurrent course of ACP is more prevalent in the paediatric population than in adults. ACPs require differential diagnosis with malignancies. The mainstay of treatment is surgery. The gold standard is endoscopic sinus surgery with complete removal of polyp mass under endoscopic control and widening of the maxillary sinus ostium via the middle meatus. Postoperative follow-up of at least 2 years is very important to monitor patients for recurrence.