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Mixed Connective Tissue Disease (MCDH)

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    • SLE is an overlap syndrome in which scleroderma, rheumatoid arthritis and polymyositis findings are seen together.

    • It is characterized by the presence of high titer of anti-Ul-RNP antibodies.

    • While some patients may differentiate into specific diseases such as SLE, scleroderma, some patients remain with MCDH.

    • The onset of the disease is typically Raynaud's phenomenon, puffy fingers and myalgia.

    • Other findings;

    o Sclerodactyly, calcinosis, telangiectasia

    o Malar rash, photosensitivity

    o Heliotrope rash, Gottron papules

    o Arthralgia

    o Pulmonary fibrosis, isolated pulmonary arterial hypertension

    o Esophageal dysmotility

    o Sjogren's syndrome

    o Kidney involvement (membranous glomerulonephritis)

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