Achilles tendon xanthoma

Achilles tendon xanthomas are painless soft tissue masses occurring most commonly at the distal one-third of the tendon, usually bilaterally and symmetrically.

It is characterised by localised accumulation of lipid laden macrophages, inflammatory cells and giant cells secondary to cholesterol deposition in tissue.

Plain radiograph
  • soft tissue densities in the Achilles tendon
  • AP thickness of the tendon >7 mm in males and >6 mm in females
  • loss of normal tendon appearance with multiple hypoechoic foci within the tendon 
  • thickened AP diameter
  • hyperintense on T1 and T2 weighted images
  • loss of normal concavity of anterior tendon
  • convexity of anterior aspect of tendon
  • speckled appearance of tendon
  • focal thickening of tendon
  • tophaceous gout
  • chronic tendon degeneration
  • tendinitis
  • infection
  • neoplasm
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Article Information

rID: 25839
Section: Pathology
Tag: cases
Synonyms or Alternate Spellings:
  • Xanthoma of the Achilles tendon
  • Achilles tendon xanthomatosis

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