Joint Neoplasia

Primary neoplasia

Human synovial sarcoma (Image sourced from Bristol Biomed Image Archive with permission)

• Rare
• Synoviomas
• Synoviosarcomas
• Mass must have connection with the joints to be diagnosed as such

Extension neoplasia

• From nearby osteosarcomas and marrow tumours

Metastatic neoplasia

• Occasionally from lymphosarcoma, carcinoma of prostate and mammary glands - may extend to lumbar vertebrae from regional (dorsolumbar) lymph nodes