Intravascular Mesenchymal Chondrosarcoma Betty Simon, MD, Anuradha Chandramohan, MD, FRCR, Anu Eapen, DMRD, DNB, Sukriya Nayak, MS, and Veena Jeyaraj, MD A 25-year-old woman with low backache underwent a computed tomography scan, which showed a heterogeneously enhancing paravertebral mass with areas of fine, granular calcification along the course of left iliac vein (Fig a). The mass was heterogeneous with fine hypointense foci on T2-weighted magnetic resonance imaging (Figs b, c) that corresponded to the calcifications seen on computed tomography. The patient underwent resection of the mass. Histology (Fig d; hematoxylin-eosin stain,  200) showed highly cellular, round to spindle-shaped tumor cells with

transition to islands of atypical cartilage cells. The final diagnosis was mesenchymal chondrosarcoma arising from the left iliac vein. Extraskeletal mesenchymal chondrosarcomas are rare. Intravascular mesenchymal chondrosarcomas are even rarer with only two previous reports, in the femoral vein and the pulmonary vein. Patients with this tumor have a poor prognosis, and the tumors recur quickly even during treatment. The present patient developed recurrence 2 months after surgery and died while undergoing chemotherapy.

From the Departments of Radiodiagnosis (B.S., A.C., A.E.), General Surgery (S.N.), and Pathology (V.J.), Christian Medical College and Hospital, Vellore, Tamil Nadu, India 632004. E-mail: [email protected]

& SIR, 2014

None of the authors have identified a conflict of interest.

J Vasc Interv Radiol 2014; 25:1937

Intravascular mesenchymal chondrosarcoma.

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