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Enchondroma is the most common tumor involving hand bones. Nearly 50% of enchondroma occur in hand, involving the plananges in particular.


  1. Etiopathology
    1. Islands of hyaline cartilage may persist in metaphysis of bones formed by endochondral ossification, sometimes they grow & take a characteristic of benign tumor.
    2. Mostly solitary but may be multiple eg.
      Ollier’s disease is unilateral multiple enchondromatosis with severe deformity & stunting of growth.
      Maffucci’s syndrome is multiple enchondromatosis with multiple hemangiomas.
    3. Malignant transformation to chondrosarcoma may occur in <2% in solitary cases, 30% in Ollier’s disease and 100% in Maffuccis syndrome.
  2. Clinical Features
    Solitary cases are usually asymptomatic & are incidently discovered x - ray after pathological fracture.
    May be seen at any age (but mostly in young people in 2nd decade) and in any bone formed in cartilage (most commonly the tubular bones of hands & feets).
  3. Investigation (x ray)
    Well defined centrally placed radio lucent area at the junction of metaphysis & diaphysis that may have mineralized flecks or whisps of calcification (FANLIKE metaphyseal septations, pathognomic sign seen in mature lesion)
  4. Treatment
    Not always necessary but enlarging lesions or if pathological fracture is present should be removed en block (if possible) or curettage + bone grafting for solitary lesions.
    For multiple lesions – treat the deformities.


  • Also called codman’s tumor.
  • Chondrogenic bening tumor
  • Epiphyseal location
  • M.F
  • 1-2% METASTASIS TO Lung
  • Histology:cobblestone/chickenwire pattern/multinucleated giant cell



Eccentric lytic lesion in epiyphyseal region with punctate calcification.



Marginal excision whenever possible (or less satisfactorily) by curettage & replacement with autogenous bone graft.


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