Baker cyst Popliteal cyst

• Facts:
  Develop as a result of excessive fluid production by inflamed synovium
  
  As synovial fluid volume expands, excess fluid accumulates in the popliteal fossa
  
• History / PE:
  Tender mass in the popliteal fossa
• Complications:
  Burst and release contents into calf (looks like DVT)
• Associated With:
  Rheumatoid arthritis
  Osteoarthritis
  Cartilage tears
• Differential Diagnosis:
  Deep venous thrombosis
  Lymphedema
  Subcutaneous abscess