head and neck neoplasm thyroglossal duct cyst familial thyroglossal duct cyst https://rarediseases.info.nih.gov/diseases/5204/familial-thyroglossal-duct-cyst https://www.malacards.org/card/thyroglossal_duct_cyst_familial hereditary thyroglossal duct cysts GARD:0005204 hereditary thyroglossal duct cyst thyroglossal duct cysts familial Familial thyroglossal duct cyst (TDC) is a very rare inherited form of TDC characterized by a mass measuring 3 cm in diameter or less in the midline area of the neck. SCTID:717331000 MEDGEN:501211 MESH:C536909 MONDO:0008565 UMLS:C3495590 OMIM:188455 thyroglossal duct cysts Orphanet:93953 thyroid tumor cysts and fistulae of the face and oral cavity hereditary otorhinolaryngologic disease