A case of congenital mucous cyst in the uvula

This case report describes a mucous cyst in the uvula of an infant. The cyst was considered to be congenital.The patient was a 3-month-old boy who was referred to our department for a tumor in the uvula. The tumor was semitransparent, spherical, and measured 7 mm in diameter. The clinical diagnosis was an epidermoid cyst, and it was surgically enucleated under general anesthesia. Histopathologically, the cyst was lined by pseudostratified columnar epithelium or ciliated columnar epithelium, and mucus was observed in the cyst on PAS, alcian blue, and mucicarmine staining. The minor salivary glands were close to the cyst wall on keratin wide immunostaining. The diagnosis was, therefore, a mucous cyst.There has been no recurrence as of 2 years after operation.