Presentation
Atraumatic elbow pain and swelling ?osteoarthritis
Patient Data
Large amorphous calcification overlying the posterior soft tissues of the right elbow/proximal radius and ulna.
Imaging features suggestive of tumoral calcinosis.
However, differential diagnoses include scleroderma.
Case Discussion
Tumoral calcinosis can be idiopathic, as in this case. In cases with raised calcium-phosphate (above 75mg/100ml), there is a common association with secondary hyperparathyroidism.1 Described as typically well-defined lobulated calcified periarticular masses. Predilection for large joints, hips, shoulders and elbows. Internal fluid-calcium levels can be seen, where the semifluid calcified material pools. Absence of bone erosions. Differential diagnoses include: osteosarcoma, chondrosarcoma, gout, HADD, hyperparathyroidism, hypervitaminosis D and scleroderma.
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