Transnasal endoscopic marsupialization of nasopalatine duct cysts: A novel ‘Mickey Mouse’ sign and a septum-sparing surgical technique to reduce paresthesia risk

A nasopalatine duct cyst (NPDC) is the most common type of non-odontogenic in maxillary region and oral cavity. Recently, a novel transnasal endoscopic approach has been described to allow marsupialization NPDCs, with good outcomes. However, one complication appears be paresthesia palate around upper incisors, which thought occur due damage nerve following septal incision. In this case report, we introduce variant technique that attempts minimize by adopting septum-sparing flap. We report no complications, including paresthesia, at 3-month follow-up. also ‘Mickey Mouse’ sign on MRI imaging associated NPDC.