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Radionuclide imaging in extraskeletal myxoid chondrosarcoma
1Department of Nuclear Medicine, Taichung Veterans General Hospital, Taiwan.
Clinical Nuclear Medicine
|June 1, 1995
Summary
This case study highlights extraskeletal myxoid chondrosarcoma imaging. Magnetic resonance imaging and scintigraphy revealed tumor characteristics, though Gallium-67 scans were unexpectedly negative.
Area of Science:
- Oncology
- Radiology
- Medical Imaging
Background:
- Extraskeletal myxoid chondrosarcoma is a rare soft tissue tumor.
- Accurate diagnosis and staging are crucial for patient management.
Observation:
- A case of extraskeletal myxoid chondrosarcoma is presented.
- Magnetic resonance (MR) imaging demonstrated tumor extent with a characteristic "rings and arcs" pattern post-Gadolinium-DTPA.
- Dynamic Technetium-99m methylene diphosphonate (Tc-99m MDP) and Technetium-99m diethylenetriaminepentaacetic acid (Tc-99m DTPA) scintigraphy indicated increased blood flow.
Findings:
- Delayed imaging showed moderate Tc-99m MDP uptake and intense Tc-99m DTPA accumulation within the tumor.
- Gallium-67 (Ga-67) scintigraphy surprisingly failed to detect the tumor.
Implications:
- This case underscores the utility of MR imaging and specific radionuclide scans in evaluating extraskeletal myxoid chondrosarcoma.
- The discrepancy in Ga-67 scan findings warrants further investigation into its diagnostic limitations for this tumor type.