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Enchondroma

Table of Contents

Overview

  • Benign, intramedullary, cartilaginous tumor
  • Most common bone tumor of the hand
  • Predilection for small tubular bones of the hand
    • Most commonly affects metacarpal and phalangeal bones
    • Ulnar sided digits affected more
  • Extremely rare malignant degneration
    • Usually associated with Ollier’s or Maffucci syndrome

Epidemiology

  • Demographics
    • Presents in third to fourth decade of life
    • Male: Female = 1:1

Associations

  • Maffucci Syndrome
  • Ollier Syndrome
  • Metachondromatosis

Presentation

History

  • Usually asymptomatic
    • Often incidental finding on Xray
  • Pathologic fracture
    • More commonly if tumor is in the hand

Work-up

Imaging

  • May appear similarly to other lytic bone lesions
Aneurysmal bone cyst
Giant cell tumor of bone

Differential Diagnosis

  • Chondrosarcoma

Treatment

Surgical

Curettage

  • Excision by curettage is the mainstay of treatment
  • Post-curettage cavity
    • No augmentation
    • Autograft augmentation
    • Osteoconductive augmentation 
    • Bone cement augmentation