Purpose or Case Report: Teaching points:

The spectrum of neck masses in neonates and infants (< 2 years) differs considerably from those in older children
Understand characteristic imaging appearances, particularly recognise entities that do not require sampling for diagnosis
Learn algorithmic approach to differential diagnosis based on age and lesion morphology with case based examples

Table of contents:
Introduction: Incidence, clinical considerations
Classification:
Age: Neonate
Cystic
Branchial cleft cyst
Dermoid cyst
Thyroglossal duct cyst
Solid:
Germ cell tumor
Congenital hemangioma
Neuroblastoma
Mixed
Primitive myxoid mesenchymal tumor (PMMT)
Teratoma

Age: Older infants
Cystic
Branchial cleft cyst
Dermoid cyst
Thyroglossal duct cyst

Solid:
Lymphoma
Granulocytic sarcoma
Rhabdomyosarcoma
Multinodular vacuolating tumor of infancy (MNTI)
Solitary fibrous tumor (SFT)
Fibrous tumors: Fibrous hamartoma of infancy, infantile fibrosarcoma

Vascular malformation (microcystic lymphatic, venolymphatic, arteriovenous)

Infections
Ludwig angina
Zygomycosis

Practical diagnostic algorithms based on age, location (involved neck space) and morphology
Conclusion
Methods & Materials:
Results:
Conclusions: