ObjectiveTo investigate the clinical application value of high frequency ultrasound in the diagnosis ofinvasive fibromatosis.MethodsThe clinical

ultrasonic and pathological data of 31 patients with invasive fibromatosisconfirmed by operation and pathology in our hospital were retrospectively analyzed

and the ultrasonic characteristics weresummarized.ResultsThe 34 lesions in 31 cases included in this group were classified into extra-abdominal type（13 cases）

abdominal wall type（8 cases）and the breast type（10 cases）according to the location of the mass.The ultrasonic characteristicsof extra-abdominal type and abdominal wall type were expressed as expansive growth

oval

growing along the long axis of themuscle

clear boundary

posterior echo enhancemen

rare calcification and liquefaction

and internal blood flow was Alder Ⅱ～Ⅲ.The ultrasonic characteristics of the breast type were expressed as"claw"invasive growth

irregular form

unclear boundary

posterior echo attenuation

rare calcification

and internal blood flow was Alder Ⅱ～Ⅲ.ConclusionThe ultrasonic manifestationsof invasive fibromatosis have acertain characteristics

which can provide preoperative diagnosis and differential diagnosisinformation for clinical practice.