J Korean Radiol Soc.  1996 Nov;35(5):811-817.

Chondrosarcoma: MR Imaging Findings Correlated with Pathologic Classification and Grade

• Cho SW
• Kang HS
• Kim SS
• Lee SH
• Cho JY
• Yeon KM

Abstract

PURPOSE
To evaluate the MR imaging findings of chondrosarcomas by correlation with pathologic classificationand grade.
MATERIALS AND METHODS
We performed MR imaging-pathologic correlation of nineteen chondrosarcomas. Conventional chondrosarcomas accounted for 15 cases (grade I : 6, II : 6, III : 3) and the mesenchymal and dedifferentiated types each accounted for two. MR signal intensity (SI) of the tumor on T1- and T2-weighted images(T1WI and T2WI, respectively), was classified as homogeneous or heterogeneous low-, iso- or high SI, and enhancing pattern as marginal, marginal and septal, marginal and nodular, or diffuse enhancement.
RESULTS
Eighteen cases of chondrosarcomas (95%) showed homogeneous or heterogeneous low- or iso SI on T1WI and high SI on T2WI. Low gradeconventional chondrosarcomas showed marginal and septal (n=8/10) or marginal (n=2/10) enhancement on Gd-enhanced MR images. Grade III conventional chondrosarcomas showed marginal or marginal and nodular enhancement. Dedifferentiated and mesenchymal chondrosarcomas showed marginal and nodular or diffuse enhancement.
CONCLUSION
Chondrosarcomas showed iso- or low SI on T1WI and high SI on T2WI. Marginal and septal enhancement was demonstrated on Gd-enhanced MR images of grade I and II conventional chondrosarcomas. If a tumor showed amarginal and nodular or diffuse enhancing pattern, this suggested it was a of high grade chondrosarcoma.

Keyword

Bone neoplasms, MR; Cartilage, MR; Gadolinium

MeSH Terms

Chondrosarcoma*
Chondrosarcoma, Mesenchymal
Classification*
Gadolinium
Magnetic Resonance Imaging*
Gadolinium