Tooth neck cyst (synonymous with bulge): a cystic odontogenic lesion of the tooth wall with the presence of tissue fluid without a tendency to develop complications. Cervical cyst (synonyms cervical ectopia, cervical leukoplakia, cervical hamartoma): a benign tumor-like formation emanating from the epithelium of the cylindrical layer of the cervical canal or the multilayered squamous layer lining it. Cystic formations of the neck. Depending on the structure, true and false cysts are distinguished. False cysts have a fibrous structure, do not contain contents and usually occur with small forms of inflammatory infiltrates and small ulcers