Objective To analyze and review MRI features of congenital cystic and cyst-like masses of the head and neck.Methods Congenital cystic and cyst-like masses of the head and neck can present in any age group.Many of these have characteristic locations and imaging findings.We retrospectively reviewed the MR imaging of 37 cases of congenital cystic and cyst-like masses of head and neck,among them thyroglossal duct cysts,cystic hygromas(lymphangioma),branchial cleft cysts,thymic,cervical bronchogenic cysts,and dermoid/epidermoid cysts from the floor of the mouth.The MR imaging features and the value of MRI for particular masses,as well as present clinical and images for each,are discussed.Results Magnetic resonance imaging(MRI)has multi-planar capability and superior contrast,which allowed precise preoperative anatomical localization,particularly for more deep-seated and locally extensive lesions.The homogeneous hypointence on T1-weighted image and hyperintence T2-weighted image particularly help to distinguish cystic from solid components.Enhanced MRI showed slight enhanced sign of cystic wall in some cases.DWI enables a differentiation between infection cyst or abscess.Conclusion According to the location,patient age and typical MR imaging appearance of the congenital cystic and cyst-like masses of the head and neck,Magnetic resonance imaging was needed for an appropriate diagnosis,and especially needed in the cases for preoperative assessment.