Male 84 years of age. It presents great mass of soft consistency located in subscapularis right back region. He says he has since more than 20 years and does not produce pain. Sonographic examination is seen as a mass with hypo-echogenic feature, appearance internal fibrillar, with hyperechoic lines, similar to muscle tissue, characteristic pattern that includes fascicularis structures knurled hypo- and hyperechoic different thickness, similar to the muscle tissue but less organized than it corresponds to fibro-elastic tissue but with some differences, more or less sharp edges without providing encapsulation, is difficult to measure accurately because of its size and the study of vascular flow Doppler shows normal flow with scattered arteriovenous vessels. It concludes with the diagnosis of dorsi elastofibroma very rare disease entity in our personal casuistry is the second case seen. It is a benign tumor prevalence of occurrence in women over men (2: 1), first described by Jarvi and Saxen in 1959.