Learning objectives
To elucidate the Imaging features of Chondroid lesions on Radiography,
CT,MRI and PET CT and discuss the differential Diagnosis.
To Discuss the Classical and variant sub types of Chodroid lesions with Radio pathological Correlation
Background
Benign Cartilage Tumors
Osteochondroma
Enchondroma
Multiple enchondromatosis
Juxtacortical (periosteal) chondroma
Chondromyxoid fibroma
Chondroblastoma
Synovial chondromatosis
Malignant cartilage tumors
Malignant Chondrosarcoma
Dedifferentiated chondrosarcoma
Mesenchymal chondrosarcoma
Clear cell chondrosarcoma
Cartilage tumors vary in severity from benign enchondroma to low-grade malignant chondrosarcoma to the highest-grade dedifferentiated chondrosarcoma.
Chondrosarcoma is the second most common primary malignant bone tumor,
accounting for 10-20% of all primary bony malignancies
Enchondroma,
which consists of benign endosteal cartilage,
is much more common than chondrosarcoma
Distinguishing benign cartilage tumors from low-grade malignant cartilage tumors poses...
Imaging findings OR Procedure Details
Chondrosarcoma CT and MRI appearances
Sites:
The commonest sites are the pelvic bones,
the femur and humerus.
Other sites are the trunk,
the skull and facial bones.
Involvement of the hands and feet is rare.
Peculiar forms develop on laryngeal cartilage,
base of the skull,
or in soft tissue.
Chondrosarcomas may occur on pre-existing lesions.
Central chondrosarcoma predominates in long bones and peripheral tumours in the pelvis and vertebrae.
Central Chondrosarcoma
Plain films:
allow the depiction and location of the lesion,
identify its cartilagenous nature...
Conclusion
This educational exhibit highlights typical and atypical multimodality imaging features of chondroid lesions of bone with differential diagnosis and approach.
References
References
1.
Krishnan K.
Dahlin’s Bone tumors: General Aspects and Data on 11087 cases.
5th edn.
Philadelphia: Lippincot-Raven publishers; 1996.
2.
Varma DG,
Ayala AG,
Carrasco CH,
Guo SQ,
Kumar R,
Edeiken J.
Chondrosarcoma: MR imaging with pathologic correlation.
Radiographics.
1992;12:687–704.
3.
Welkerling H,
Kratz S,
Delling G,
Ewerbeck V.
Differentiation of enchondroma and low-grade chondrosarcoma-clinicopatological and radiological findings in 34 cases.
Sarcoma.
2002;6:S9.
EMSOS abstract A09.
4.
Geimaerdt MJA,
Hermans J,
Bloem JL,
et al.
Usefulness of radiography in differentiating enchondroma from gentral grade...