Nasolabial Cyst- A Rare Entity: Report of Five Cases

Objectives: Nasolabial cyst, also known as Klestadt’s cyst, is relatively rare soft tissue lesion of nasal alar region, extending into the lower nasal meatus, the upper gingivolabial sulcus and the floor of the nasal vestibule. It is non-odontogenic in origin and characterized by its extra osseous location. This entity represents approximately 0,3% of all maxillary cysts.

Methods: We retrospectively reviewed 5 patients with nasolabial cyst from medical records between 2012 and 2018. Clinical and pathological information was collected from medical records. Nasolabial cysts were diagnosed based on the clinical exam and CT imaging. All of the patients underwent cyst enucleation surgery. Histopathology confirmed the diagnosis.

Results: There were 3 female and 2 male patients with a mean age of 55.2 years. There was no case with bilateral nasolabial cysts. The predominant symptoms were lip swelling, nasal asymmetry, nasal obstruction and pain upon local palpation with no signs of infection. The time between the onset of symptoms and a consultation with a specialist was approximately 3 years. CT was done in all of the patients. Surgical enucleation under general anesthesia was done in all of the cases. Histopathology was done in all of the surgical specimens to confirm the diagnosis.

Conclusion: Nasolabial cysts are infrequent in the general population. Although these cysts may be asymptomatic, the usual presentation is localized swelling, local pain and partial or total nasal obstruction. This lesion should always be kept considered in the differential diagnosis of soft tissue swelling in nasal alar region. After conservative surgical excision, recurrence is rare.