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  • Title: Dermatomyositis presenting with diffuse calcinosis.
    Author: Walsh M, Bettendorf B, Zahn C.
    Journal: BMJ Case Rep; 2023 Dec 16; 16(12):. PubMed ID: 38103899.
    Abstract:
    We present the case of a woman in her early 50s who initially presented to an orthopedist for nodules located near the posterior knee. Imaging revealed diffuse subcutaneous calcifications and she was subsequently referred to rheumatology. Additional testing included myositis panel, electromyography (EMG) and muscle biopsy which indicated the presence of an inflammatory myopathy. It was determined that this patient had an uncommon presentation of dermatomyositis in which her primary complaint was calcinosis cutis. While rash and muscle weakness are often the symptoms most commonly associated with dermatomyositis, it is essential to have a wide differential for patients presenting with calcium deposition in soft tissues. This is particularly important in patients with certain antibodies, including the NXP-2 antibody, which can be associated with malignancy and should prompt an appropriate malignancy workup.
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