Elastofibroma dorsi: sonographic findings.

Abstract

Elastofibroma dorsi is a rare, slow-growing reactive pseudotumor of connective tissue typically located in the subscapular region. We report the sonographic characteristics of three cases of elastofibroma dorsi. The sonographic appearance of elastofibroma dorsi consists of arrays of interspersed linear or curvilinear hypoechoic stands against an echogenic background. These findings reflect the alternating pattern of fibroelastic streaks and fat that is also detected with other imaging techniques and found on pathologic specimens. In the proper clinical setting, a prospective sonographic diagnosis can obviate the need for further imaging assessment and biopsy.