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What is This Soft Subcutaneous Nodule on the Forearm?

What is This Soft Subcutaneous Nodule on the Forearm?

Case Report
A 61-year-old man presented with an intermittent soft mass on his left forearm. The lesion was present for 3 years and frequently changed in size. There was no history of trauma or infection to the area. His past medical history was significant for gout, hyperlipidemia, hypertension, obesity, obstructive sleep apnea, and type 2 diabetes. Cutaneous examination revealed a soft, blue, 10 mm x 10 mm, compressible, painless, subcutaneous nodule on the proximal extensor aspect of his left forearm (Figure 1). The nodule was most prominent when he held his arm down and resolved when his arm was raised. 

 Spontaneous Superficial Venous Aneurysm

What Is The Diagnosis?
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