Location	Diagnosis
	Developmental	Inflammatory/reactive	Neoplastic
Anterior sternocleidomastoid	Branchial cleft cyst,* vascular malformation	Reactive lymphadenopathy,* lymphadenitis (viral, bacterial),* sternocleidomastoid tumor of infancy	Lymphoma
Midline	Thyroglossal duct cyst,* dermoid cyst*	—	Thyroid tumor
Occipital	Vascular malformation	Reactive lymphadenopathy,* lymphadenitis*	Metastatic lesion
Preauricular	Hemangioma, vascular malformation, type I branchial cleft cyst	Reactive lymphadenopathy,* lymphadenitis,* parotitis,* atypical mycobacterium	Pilomatrixoma, salivary gland tumor
Submandibular	Branchial cleft cyst,* vascular malformation	Reactive lymphadenopathy,* lymphadenitis,* atypical mycobacterium	Salivary gland tumor
Submental	Thyroglossal duct cyst,* dermoid cyst*	Reactive lymphadenopathy,* lymphadenitis (viral, bacterial)*	—
Supraclavicular	Vascular malformation	—	Lymphoma,* metastatic lesion