Neck spaces:
Thyroglossal duct cyst
Branchial cleft anomalies
Cystic hygroma
Laryngocele
Dermoid and epidermoid cysts
Thymic cyst
Cervical bronchogenic cysts
Nasopharynx:
Tornwaldt's cyst: incidental asymptomatic midline lesions
Rathke's pouch: extremely rare