IgG4-Related Sclerosing Mediastinitis: Report of a Case with Distinct Ultrasound Findings - Rettenbacher, Thomas; Petrova-Schumann, Katja; Brunner-Palka, Malgorzata; Brunner-Veber, Andrea; Pototschnig, Claus; Gruber, Johann (Ultrasound International Open, 2017)