KeypointsAntrochoanal polyps (ACPs) are often diagnosed clinically; however, a variety of other important differentials should be considered.Our retrospective case review of 61 patients with a pre‐operative clinical and radiological diagnoses of ACPs revealed 11 with differing diagnosis.Of those with alternative diagnosis, 10 had benign pathology (inverted papilloma, oncocytic papilloma, capillary haemangioma, angiomatoid polyp and fungal ball), in addition to 1 malignant case (cylindrical cell carcinoma).ACPs may mimic a diverse range of other pathologies; however, certain clinical and radiological features should raise the index of suspicion to an alternative diagnosis.Involvement of a specialist multidisciplinary team with careful histopathological analysis of resection specimens can ensure more accurate diagnosis and treatment.INTRODUCTIONAntrochoanal polyps (ACPs) are benign, large, inflammatory polyps which originate from within the maxillary sinus and extend through the natural or accessory ostia, into the nasal cavity, with extension into the choana. They are relatively uncommon, accounting for just 3%‐6% of all nasal polyps, although they are much more frequently encountered in children, affecting up to 35% of the paediatric population. Even among adults, they usually present at a younger age, as compared with usual nasal polyps with a mean age at diagnosis of 27 and 50 years, respectively. ACPs are also
Clinical Otolaryngology – Wiley
Published: Jan 1, 2018
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