Achilles tendon xanthoma

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

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

Causes
Plain radiograph
  • soft tissue densities in the Achilles tendon
Ultrasound
  • an 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 
MRI
  • increased AP diameter
  • hyperintense on T1- and T2-weighted images
  • loss of the normal anterior concavity of the tendon
  • convexity of the anterior aspect of the tendon
  • speckled appearance of the tendon
  • focal thickening of the tendon
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Article information

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

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Cases and figures

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    Case 1
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