An unusual case of the congenital mesenchymal hamartoma of the neck associated with the midline cervical cleft in neonate

Abstract Objectives Hamartomas are non-neoplastic developmental anomalies, mostly congenital, characterized by uncontrolled, disorganized proliferation of local endogenous tissue, which can normally be found at the site origin and very often mesodermally derived. It is well known that hamartoma associated with congenital midline cervical cleft therefore cause a variety symptoms. In general, they benign indolent, but complex morbidity if localized within specific regions, such as head neck, represent highly sensitive vulnerable areas. Case presentation The reported case unusual because presence mesenchymal along median cleft, in 1-day-old neonate, without any respiratory symptoms or features. Although extremely rare, hamartomas should included differential diagnosis neck masses, emphasis on diagnostic approach, to avoid overly aggressive treatment possible complications, infection, further mass growth, malignant transformation compression adjacent structures. Conclusions Appropriate timely neonates, follow-up necessary an distinguish from lesions, for successful curative outcome.