Isolated Congenital Lip Sinuses Mimicking Vermillion Cleft of the Lower Lip: Report of a Rare Case and Review of Management Strategies

Isolated congenital lip sinus (ICLS) is one of the rarest congenital deformities seldom reported in the literature. The clinical presentation is extremely variable ranging from isolated single lip pit in the midline to deep sinuses, rarely presenting as fistulous tracts opening into the lower lip or alveolus. The management often includes surgical excision but may be associated with secondary aesthetic deformities that may range from obvious scars to mucous retention cysts. The aim of this paper is to report one such case of ICLS and discuss in detail best management strategy and also describe their prognostic significance.