Objective:

To analyze the imagings of two-dimensional ultrasound and color Doppler flow imaging (CDFI) of chondrosarcoma

and to investigate the ultrasonic features of chondrosarcoma.

Methods:

A retrospective analysis of ultrasonography was performed in 19 cases pathologically diagnosed with chondrosarcoma.

Results:

17 lesions (89.5%) were located in the deep muscle and close to the bone cortex surface

and two lesions (10.5%) were located in the breast. The lesion diameters in 18 cases (94.7%) were greater than or equal to 5 cm. 15 lesions (78.9%

) had weak echo . Clear boundary was shown in 12 cases (63.2%) and irregular morphology was shown in 15 cases (78.9%). Heterogeneous internal echo appeared in 19 cases (100%). 17 cases (89.5%) had bone destruction

and 17 cases (89.5%) had calcification. The blood flow grades in 12 cases (63.2%) were 0 and I. There were 9 cases with low-grade chondrosarcoma and 10 cases with high-grade chondrosarcoma. There were significant differences in blood flow grade and calcification type between low-grade chondrosarcoma and high-grade chondrosarcoma (

P

0.05). However

the size

boundary

shape

internal echo

calcification

bone destruction were not significantly different (

P

0.05).

Conclusion:

Chondrosarcoma is a kind of weak echo mass localized in the deep muscle and close to the bone cortex

with diameter greater thanor equal to 5 cm

clear boundary

irregular shape

uneven internal echo. Bone destruction

calcification and less blood supply are the common ultrasonographic appearances. The most common ultrasonic difference between low-grade chondrosarcoma and high-grade chondrosarcoma is that the former has less blood supply and patchy calcification.