[Nasoalveolar cyst. Five new cases].

Nasoalverolar cyst are nonodontogenic maxillary cysts, rare and benign, which are more common in females and blacks. Their diagnosis can be established mainly on the clinical presentation, being usually asymptomatic during several years until they are large enough to cause cosmetic deformities and/or nasal obstruction, with asymmetrical alar flare. The treatment of choice is the complete surgical excision via a sublabial approach. Five cases diagnosed and treated at the Santa Maria del Rosell Hospital are reported, describing the most relevant clinican and pathological findings, so the diagnostic ant therapeutic methods.