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Case of the Week 565


What is the most likely diagnosis?

  • 61 year-old man with shoulder pain



AP Radiograph of Shoulder

  1. Heterotopic Ossification
  2. Hydroxyapatite Deposition Disease
  3. Calcinosis Universalis
  4. Fracture of Greater Tuberosity
  5. Metastatic prostate Cancer

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Answer:

 

2. Hydroxyapatite Deposition Disease

 

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Hydroxyapatite Deposition Disease

General Considerations

  • Calcium phosphate crystals are deposited in the form of calcific tendinitis, other periarticular hydroxyapatite deposition, and hydroxyapatite-induced arthritis
  • May be primary, such as calcific tendinitis and bursitis, or secondary, as in dystrophic calcification in chronic renal disease or collagen vascular diseases
  • Most common in middle aged men, slightly greater than women
  • The shoulder is the most common site

MORE . . .

 


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