Differential diagnosis of neck lump classification inflammation：acute, chronic；specific, nonspecific trauma：hematoma、false aneurysm neoplasm： benign or malignancy：more in benign malignant：primary, metastasis； deformity：angioma、cyst

Differential diagnosis of neck lump General law Duration： 7d inflammation，7M neoplasm，7y deformity propery： 80%malignant in neoplasm 80% metastasis in malignancy 80% head and neck source in metastasis site： metastasis in left supraclavicularis from left chest or abdomen, in right from right chest

Differential diagnosis of neck lump Common tumor middle：thyroid tumor, thyroglossal cyst sternocleidomastoid muscle region： metastasis, neural tumor, branchial cyst, adenitis, carotid body tumor Submaxillary triangle：neoplasm of submaxillary gland, adenitis Postmaxillary region：neoplasm、neural tumor Posterior region of neck ：adenitis, metastasis

Differential diagnosis of neck lump Assistant examination B ultrasound CT MRI DSA puncture Pathological examination：cell、tissue

Differential diagnosis of neck lump inflammation：short duration，local pain, haphalagesia，change in size，antiinfection operative Benign tumor：grow slowly, no pain, mestexture，smooth face Primary malignance：progressive growth, short duration, rough face, hard texture, poor activity

Differential diagnosis of neck lump metastasis：most in sternocleidomastoid muscle region，progressive growth，poor activity。Symptoms of primary lesion Deformity: long duration，slowly growth， cyst feeling evident ，can get liquids from the lump

treatment of neck lump inflammation：anti-infection Benign tumor： surgery Primary malignancy：chemotherapy or radiotherapy， surgery metastasis：radiotherapy, neck dissection deformity：surgery trauma：surgery

Deformity of neck thyroglossal cyst or fistula: thyroglossal dust irregression during embryo Classification of fistula： complete—outer fistulous inlet、inner fistulous inlet uncomplete—outer fistulous inlet Middle line of neck diagnosis： cyst or fistula in the middle of neck,Ｂultrasonic, CT, isotope examination treatment：surgery

thyroglossal cyst or fistula

thyroglossal cyst or fistula

thyroglossal cyst or fistula

angioma

angioma

Branchial fissure fistula or cyst Outer inlet Inner inlet the first sternocleidomastoid muscle region Ear cannel The second Tonsil pouch The third Priform fossa

lymphangioma

lymphangioma

lymphangioma

Malignancy in neck metastasis Primary lesion NPC（６０％－８０％） Tonsil malignancy Hypopharyngeal cancer Laryngeal cancer Thyroid cancer Malignancy of sinus Malignancy of mouth

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