Published in: 01-12-2013 | Images in Pediatrics A lump in an arm Authors: Federica Pederiva, Edoardo Guida, Giulio Andrea Zanazzo, Massimo Gregori, Jurgen Schleef Published in: European Journal of Pediatrics | Issue 12/2013 Login to get access Abstract The authors present a magnetic resonance image showing a soft tissue mass misdiagnosed as sarcoma.