1、Differential diagnosis of neck lumpclassification 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 lumpGeneral law Duration：7d inflammation，7M
2、 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 chestDifferential diagnosis of neck lumpCommon tumor middle：thyroid tumor,thyroglossal cy
3、st 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,metastasisDifferential diagnosis of neck lumpAssistant ex
4、amination B ultrasound CT MRI DSA puncturePathological examination：cell、tissueDifferential 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,s
5、hort duration,rough face,hard texture,poor activityDifferential 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 lumptreatment of
6、 neck lump inflammation：anti-infection Benign tumor：surgery Primary malignancy：chemotherapy or radiotherapy，surgery metastasis：radiotherapy,neck dissection deformity：surgery trauma：surgeryDeformity of neckthyroglossal cyst or fistula:thyroglossal dust irregression during embryoClassification of fist
7、ula：completeouter fistulous inlet、inner fistulous inlet uncompleteouter fistulous inlet Middle line of neckdiagnosis：cyst or fistula in the middle of neck,ultrasonic,CT,isotope examinationtreatment：surgery thyroglossal cyst or fistula thyroglossal cyst or fistulathyroglossal cyst or fistulaangioma a
8、ngioma Branchial fissure fistula or cystOuter inletInner inletthe firststernocleidomastoid muscle regionEar cannelThe secondsternocleidomastoid muscle regionTonsil pouchThe thirdsternocleidomastoid muscle regionPriform fossa lymphangiomalymphangiomalymphangiomaMalignancy in neck metastasisPrimary lesion NPC（）（）Tonsil malignancy Hypopharyngeal cancer Laryngeal cancer Thyroid cancer Malignancy of sinus Malignancy of mouthThank You
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