Chondrosarcoma classification: Difference between revisions
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====Grades 2 and 3==== | ====Grades 2 and 3==== | ||
*These grades are increasingly faster-growing cancers, with more varied and abnormal-looking cells. | *These grades are increasingly faster-growing cancers, with more varied and abnormal-looking cells. | ||
*Nuclear pleomorphism and mitoses are common. | *Nuclear pleomorphism and mitoses are common in grade 3 chondrosarcoma. | ||
*These are much more likely to infiltrate surrounding tissues, [[lymph nodes]], and organs. | *These are much more likely to infiltrate surrounding tissues, [[lymph nodes]], and organs. | ||
====Grade 4==== | ====Grade 4==== | ||
*Some, but not all, authorities and medical facilities assign a "Grade 4" to the most [[anaplastic]], undifferentiated cartilage-derived tumors. | *Some, but not all, authorities and medical facilities assign a "Grade 4" to the most [[anaplastic]], undifferentiated cartilage-derived tumors. | ||
Revision as of 15:13, 27 August 2015
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Chondrosarcoma Microchapters |
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Chondrosarcoma classification On the Web |
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American Roentgen Ray Society Images of Chondrosarcoma classification |
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Risk calculators and risk factors for Chondrosarcoma classification |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Classification
Classification and Grading
Physicians grade chondrosarcoma using several criteria, but particularly on how abnormal the cancerous cells appear under the microscope, and the growth rate of the tumors themselves, both of which are directly linked to the propensity of the cancer to invade locally, and to spread widely to distant organs and sites in the body (called metastasis).
Grade 1
- Chondrosarcoma grows relatively slowly, has cells whose histological appearance is quite similar to cells of normal cartilage
- Mild-to-moderate increase of cellularity +/- binucleated cells.
- Have much less aggressive invasive and metastatic properties.
Grades 2 and 3
- These grades are increasingly faster-growing cancers, with more varied and abnormal-looking cells.
- Nuclear pleomorphism and mitoses are common in grade 3 chondrosarcoma.
- These are much more likely to infiltrate surrounding tissues, lymph nodes, and organs.
Grade 4
- Some, but not all, authorities and medical facilities assign a "Grade 4" to the most anaplastic, undifferentiated cartilage-derived tumors.
ICD-O codes provide a more precise classification of chondrosarcoma. These "subtypes" are derived from, and reflect, both (a) The topographical location of the tumor (b) The histological characteristics of the cancerous cartilage cells (c) The makeup of the surrounding matrix material associated with the tumor
- 9220 = Chondrosarcoma NOS ("Not Otherwise Specified")
- 9221 = Juxtacortical chondrosarcoma
- 9231 = Myxoid chondrosarcoma
- 9240 = Mesenchymal chondrosarcoma
- 9242 = Clear cell chondrosarcoma
- 9243 = Dedifferentiated chondrosarcoma