Sarcomatoid chordoma: chordoma with a massive malignant spindle-cell component.

Morimitsu, Y; Aoki, T; Yokoyama, K; Hashimoto, H · Skeletal Radiol · 2000

case_report · Level V

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Abstract

We report a case of chordoma containing a spindle cell sarcomatoid component with a gradual transition from conventional chordoma. Immunohistochemically, many tumor cells in both conventional chordoma and sarcomatoid components were positive for cytokeratins (AE1/AE3, CAM5.2) and epithelial membrane antigen as well as vimentin. This report provides a rare example of sarcomatoid chordoma. Familiarity with this type of bone tumor should help to avoid confusion with dedifferentiated chordoma and other spindle cell sarcomas or carcinomas.

Medical subject headings

Anatomy