X-ray and pathological analysis of patellar epithelioid angiosarcoma: a case report and literature review

Objective: To improve X-ray and pathological knowledge of patellar epithelioid angiosarcoma(PEA). Methods: X-ray film and pathological examinations with photo-microscopy and electronic microscopy in one patient with patellar epithelioid angiosarcoma was studied and relative literature about PEA was reviewed. Results: PEA originated from patellar center, and showed a low density area of oval-shape which was covered by necrosis of patellar cartilage and hyperplasia of synovial membrane. However, the bone destruction of the patella enlarged widely after 4 months. Conclusion: PEA, a rarely seen disease,is hard to differentiate from synovioma, fibrosarcoma or giant cell tumors, whose diagnosis depends on pathological examination