Congenital imperforate submandibular duct in a newborn.

Varried conditions such as ranula, epidermal/dermal inclusion cyst, lymphatic cyst, thyroglossal cyst, sialolithiasis, branchial cleft cyst are known to produce swelling in the floor of mouth. Rarely imperforate or duplication anomaly of submandiblar duct may produce cystic lesion in the floor of mouth. We present a case of congenital imperforate submandibular duct with cyst formation in a newborn. We also review the literature regarding management.