Abstract: [
Abstract ] Objective Toevaluatedthedifferentialdiagnosticvalueofreal-timeultrasound
elastography ( USE ) onsinglesolidbreastmass≤15mminmaximumdiameteraccordingto4B
gradeofbreastimagingreportinganddatasystem ultrasound ( BI-RADS-US ) .Methods One
hundredandsevenconsecutivepatientswithsmallsinglesolidbreastmasswereconductedtwo-
dimensionalandcolorDopplerultrasound.Allsmallbreasttumorswereclassifiedas4Baccording
toBI-RADS-USclassificationcriteria.Beforesurgeryeachpatientwasthenexaminedbyreal-time
USE , andthefindingsonelastography wereclassifiedinto Ⅰ - Ⅴ grades.Ultrasonographic
resultswerecomparedwithhistopathologicdata.Results Forty-fourpatientswerefoundwith
gradeⅠandⅡbenignlesions ; 22withgradeⅢ ( 17benignand5carcinoma ); 41withgradeⅣ
andⅤ ( 4benignand37carcinoma ) lesionatultrasonographicelastography.Basedontheelastic
stageⅣ-Ⅴishighlymalignantpredictiveindex , thesensitivity , specificityandaccuracywere
88.1% , 93.8% and91.6% respectively.Thepositivepredictivevalue was90.2% andthe
negativepredictivevaluewas92.4%.Conclusion Real-timeUSEseemstohavegreataccuracy
fordifferentialdiagnosisofsmallsinglesolidbreastmass≤15mminmaximumdiameter , which
isclassifiedas4BgradefollowedtheBI-RADS-UScriteria.

Key words: breastneoplasms , breastdiseases , elasticityimagingtechniques