Hyoid bone is closely associated with -
Hyoid bone is closely associated with the thyroglossal tract from which thyroglossal cyst & fistula originate, thus during surgical excision of the thyroglossal cyst or fistula, the central part of the hyoid bone is excised (otherwise recurrence may occur).
Bronchiogenic cyst
Cystic hygroma
Thyroglossal cyst/fistula
Branchial cyst