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Patient B - 3rd proximal phalanx
  • Benign cystic bone lesion which contains calcified chondroid matrix (Rings and Arcs) except when in the phalanges
  • Result of cartilage rests being left behind as growth plate advanced
  • Difficult to differentiate between Chondrosarcoma, which can be painful

Patient A
Patient A
Patient A

Differential Diagnosis

Fog Machines or Fegnomashic

Ollier's Disease

  • Multiple enchondromas with a flame-shaped appearance that run perpendicular to the physes
  • Sarcomatous degeneration in 25%

Maffucci Syndrome

Multiple enchondromas with soft tissue hemangiomas and increased rate of malignant transformation.