1.Clinical examination grading system and clinical significance? (1) Fill in the clinical examination results, that is, according to the results of breast screening tests, comprehensive clinical findings, assessment and grading No abnormality – that is, grade 1 Benign disease – that is, grade 2 Benign possibility – that is, grade 3, benign possibility, to be excluded malignant (75%) Other – all conditions other than the above, including within grade 0. -Grade 3, high probability of benign, malignant to be excluded (75%) Other – all cases other than the above, including grade 0. 2.Molybdenum BI-RADS grading system and clinical significance BI-RADS grade 0: need to combine with other examinations BI-RADS grade 1: negative BI-RADS grade 2: benign BI-RADS grade 3: benign possible, need short-term follow-up BI-RADS grade 4: suspicious malignant, suggest biopsy 4A: low suspicious 4B: moderate suspicious 4C: high but not sure BI-RADS grade 5: highly malignant RADS Level 5: Highly malignant BI-RADS Level 6: Malignancy has been pathologically confirmed 3. Breast ultrasound grading system and clinical significance 0 points: ultrasound cannot effectively evaluate the lesion, other tests are needed for diagnosis 1 point: normal: no lesion, follow-up is recommended 2 points: benign findings: no malignant signs, such as cysts, etc. 3 points: benign possibility: not quite like malignancy, risk of malignancy <2% 4 points: not excluding malignancy: possibility of malignancy, puncture is recommended Risk of malignancy 3-94% 5 points: highly probable malignancy: malignancy possibility >95%, puncture recommended 6 points: Known breast cancer: puncture confirmed breast cancer, examination before treatment