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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
- Heterotopic Ossification
- Hydroxyapatite Deposition Disease
- Calcinosis Universalis
- Fracture of Greater Tuberosity
- Metastatic prostate Cancer
Additional Image-None
Additional Images
None
Answer:
2. Hydroxyapatite Deposition Disease
More (Click Discussion Tab)
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 . . .
.
This Week
61 year-old man with shoulder pain |
Some of the fundamentals of interpreting chest images |
The top diagnostic imaging diagnoses that all medical students should recognize according to the Alliance of Medical Student Educators in Radiology |
Recognizing normal and key abnormal intestinal gas patterns, free air and abdominal calcifications |
Recognizing the parameters that define a good chest x-ray; avoiding common pitfalls |
How to recognize the most common arthritides |
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| LearningRadiology.com |
is an award-winning educational website aimed primarily at medical students and radiology residents-in-training, containing lectures, handouts, images, Cases of the Week, archives of cases, quizzes, flashcards of differential diagnoses and “most commons” lists, primarily in the areas of chest, GI, GU cardiac, bone and neuroradiology. |
