Sinonasal mucous cyst: A rare complication of septorhinoplasty

IntroductionSeptorhinoplasty is a common performed surgery. Late complications of septorhinoplasty are uncommon but may be serious and difficult to manage. Nasal septal mucous cyst is a rare post-operative complication.ObjectivesWe aim for discussing the etiological theories and suggesting strategies to prevent this complication.Case reportWe report a case of septal nasal cyst developed 15 years after a closed septorhinoplasty procedure. It was a 68-year old man presenting with a chronic progressive headache with intermittent rhinorrhea. Rhinologic examination revealed a prominent bulge in the posterosuperior wall of bilateral nasal fossa. CT scan and MRI helped make the diagnosis of a sinonasal mucous cyst. Complete removal of this formation was performed using an intranasal endoscopic surgery.ConclusionIt seems that the proliferation of entrapped fragments of epithelial tissue is the cause of this phenomenon. To avoid such a complication, procedures of septorhinoplasty should be performed appropriately and mucosal lining should be kept intact.