Chondrosarcoma: MR Imaging Findings Correlated with Pathologic Classification and Grade.
10.3348/jkrs.1996.35.5.811
- Author:
Seong Whi CHO
1
;
Heung Sik KANG
;
Sam Soo KIM
;
Sang Hyun LEE
;
Jeong Yeon CHO
;
Kyung Mo YEON
Author Information
1. Department of Radiology, Seoul National University College of Medicine, Korea.
- Publication Type:Original Article
- Keywords:
Bone neoplasms, MR;
Cartilage, MR;
Gadolinium
- MeSH:
Chondrosarcoma*;
Chondrosarcoma, Mesenchymal;
Classification*;
Gadolinium;
Magnetic Resonance Imaging*
- From:Journal of the Korean Radiological Society
1996;35(5):811-817
- CountryRepublic of Korea
- Language:Korean
-
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.
