Proliferative Myositis in the Upper Extremity: Vaccination-Induced Pathology?

Abstract

Proliferative myositis (PM) is a rare type of inflammatory myositis. It is a benign and self-limiting pathology, but its clinical presentation can simulate malignancy. This pictorial essay illustrates the typical imaging findings of PM on ultrasound (US) and magnetic resonance imaging (MRI) in three patients. Clinical history in all three patients revealed recent vaccination procedures.