Primary extra-axial, para-articular Chordoma of the knee. A case report and the review of literaturę

Abstract

Chordoma is a rare malignant tumor demonstrating notochordal differentiation [1]. It almost invariably arises in the axial skeleton however rare examples of primary extra-axial chordomas have been reported [2-5]. We describe herein, for the first time, a primary conventional chordoma arising in the synovium of the knee joint.

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