Abstract
The nasolabial cyst is a rare non-odontogenic cyst. Although its pathogenesis is controversial, most clinician today believe it to be a fissural cyst. Patients with this lesion usually present with swelling, nasal ala elevation and obstruction of nasal cavity. A spiration of the cystic content shows straw-color fluid. Occlusal radiography revealed displacedment of the anterior and lateral edges of the nasal floor and bone rarefaction in the case of large nasolabial cyst. Surgical excision through sublabial approach is appropriate treatment of choice. No case of recurrence was reported in the previous literatures. Most nasolabial cysts contain pseudostratified columnar epithelium. Clinically it mimics facial cellulites, periapical abscess or nasal furuncle and which mimicry may bring about diagnostic challenge. The report presents 3 cases of nasolabial cysts of different sizes. They show different clinical signs, different radiographic signs and histopathologic character individually. The objective of this paper is to increase readers' understanding of the nasolabial cyst with the aim of expecting to avoid and overcome diagnostic challenges.
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