Dermal mucinosis as a sign of venous insufficiency
ABSTRACT Dermal mucinoses are a heterogeneous group of disorders characterized by abnormal deposition of dermal mucin, an amorphous substance composed of hyaluronic acid and sulfated glycosaminoglycans. We describe two cases of dermal mucinosis in the setting of chronic venous insufficiency. Both patients presented with painful, edematous lower extremity plaques. Biopsies of all lesions showed striking dermal mucin deposition, a slight increase in small blood vessel density, slightly thickened vessel walls and no inflammation. Neither patient showed laboratory or clinical findings consistent with a secondary mucinosis such as thyroid dysfunction, lupus erythematosus, dermatomyositis, scleroderma, granuloma annulare, graft-vs.-host disease or mucin deposition post-ultraviolet or photochemotherapy treatment. Both patients were diagnosed with localized cutaneous mucinosis secondary to venous insufficiency. The clinicopathological features of this entity are described, and a pathogenic mechanism is proposed.
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ABSTRACT: We present the case of a patient with dermatomyositis and diffuse cutaneous mucinosis and give an up-to-date detailed review of all the published cases in the English literature describing the demographics, clinical picture, pathology management, and outcomes of this unique group of patients.01/2014; 2014:938414. DOI:10.1155/2014/938414
Clinical and Experimental Dermatology 12/2013; 39(2). DOI:10.1111/ced.12234 · 1.23 Impact Factor
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ABSTRACT: Cutaneous mucinoses are a heterogeneous group of diseases characterized by abnormal deposition of dermal mucin. Considering the collagen disorder due to the mucin deposition, collagen microstructure was visualized by second harmonic generation (SHG) microscopy to gain structural and diagnostic information. High resolution images of collagen in the dermis of skin lesion with mucinosis and healthy skin showed differences in their microstructures. SHG density as well as depth dependant decay coefficient was analyzed to quantitatively characterize the microstructure. Our results demonstrated the possibility of SHG imaging to in vivo tracking the pathological process of mucinoses and evaluate the therapeutic efficacy.