Objective:

To investigate the characteristics of high-frequency ultrasound sonograms of dermatofibrosarcoma protuberan (DFSP).

Methods:

A retrospective analysis was performed on the ultrasonographic images of 59 patients with DFSP confirmed by postoperative pathology.

Results:

Among 59 patients

34 occurred in the trunk

19 in the limbs

and 6 in the head. 50 cases were located in the skin and subcutaneous layer

and 9 cases were located in the subcutaneous layer

which was not associated with the skin layer. 44 cases had clear boundaries and 15 cases had unclear boundaries. 40 p

atients had regular morphology and 19 patients had irregular morphology. The maximum diameter of the mass was 0.5-10.0 cm. The aspect ratios were all less than 1. The posterior echo was enhanced in 39 cases

and the echo was unchanged in 20 cases. 12 cases had homogeneous echoes

47 cases had uneven echoes. Under the background of low echo in 40 cases

high echo inlay of various shapes (point

short line

slice and fissure) was found

low weak echo in 16 cases

high echo in 3 cases. Blood flow Adler classification: 1 case was grade 0; 8 cases were grade Ⅰ; 25 cases were grade Ⅱ; 25 cases were grade Ⅲ. No liquefaction

calcification and lymph node metastasis were seen in all cases.

Conclusion:

The sonographic manifestations of DFSP have certain characteristics

which can provide clinically useful diagnostic information.