Cutaneous Myxoid Cyst

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Abstract
Analysis of 43 cutaneous myxoid cysts in 40 patients with lesions of the fingers and toes revealed the most common clinical appearance to be a soft or fluctuant cystic nodule. The pathogenesis consists of fibroblastic proliferation in the corium, an increased production of hyaluronic acid by these fibroblasts, and an associated decrease or absence of collagen formation. Hyaluronic acid accumulates between the collagen fibers, eventually replaces the collagen, and usually results in formation of cystic spaces in the corium. No evidence was found to support origin from joint cavities, tendon sheaths, or bursae. Local surgical excision and other destructive methods resulted in a fairly high rate of recurrence. Injection of triamcinolone into the lesion is a simple and effective method of treatment.

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