True and false aneurysms of veins are very rare conditions and only few cases have been described in the literature. We present a case of a 56-year-old female with personal history of primary arterial hypertension and connective tissue disease. Ultrasound of the neck showed a saccular, compressible, hypoechoic structure that appeared to have a direct communication with the left external jugular vein lumen. The venous aneurysm was removed and the histopathology of the mass showed a grossly dilated vein, with continuous aspects of the entire 3 layer of the venous wall, classifying it as a venous aneurysm.
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