Research Article

Extraskeletal Myxoid Chondrosarcoma: A Comparative Study of Imaging and Pathology

Table 1

The clinical and imaging manifestations of EMC.

NoAgeSexlocationMedical historysize (cm)Manifestation of CTCT value (Hu)CT enhancementT1WIT2WIInternal mass

152MRight gluteal20+ days7.5x7///Slight low signalStrongly high signal, lobulatedEnhancing internal septation
255FLeft thigh1 year1.6x2.2Low density, round mass15-25Minimal (<10Hu)///
340MRight thigh6 years7.5x7.1///Iso signal, with dark internal septationStrongly high signal, lobulatedEnhancing internal septation
444Flower abdomen1 year8.9x8.5Isodensity, lobular mass, with calcification37-40Moderate enhancement, heterogeneousIso signal, with dark internal septationStrongly high signal, lobulatedEnhancing internal septation
543FSpinal canal3 years after operation1.1x1.5///Slight high signalIso signalHeterogeneous
654MRight pars nasalis pharyngis20 days4.0x2.7Isodensity, irregular mass24-38Minimal (<10Hu)///
765MRight carpal canal8 years1.5x1.8///Iso signalhigh signal, with dark internal septation/
847MLeft buttocks5 years8x6///Iso signal, with dark internal septationStrongly high signal, lobulatedEnhancing internal septation
945FRight knee1 week8.0x6.6Low density, irregular mass23-28/Iso signal, with dark internal septationStrongly high signal, lobulatedEnhancing internal septation
1048FWalls of the chest3 years3.2x4.1Low density, irregular mass16-20Minimal (<10Hu)///
1128FRight lower jaw1 month4.6x3.7///Slight low signalHigh signalHeterogeneous
1243MRight lower limb, pelvis3 years12x10Uneven density, irregular mass, with calcification/Moderate (>20Hu)Mixed signalStrongly high signal, lobulatedRim enhancement
1333FRight lumbosacral portion2 months4.5x2.5Uneven density, irregular mass/Minimal (<10Hu)Slight low signalStrongly high signal, lobulated/