cases, skin Week 451: Case 1 April 26, 2023 pathadmin 1. Presented by Peter Illei, M.D. and prepared by Carla Ellis, M.D.17-year-old girl with a large subcutaneous left shoulder massAcquired progressive lymphangiomaArteriovenous malformationAcquired progressive lymphangiomaKaposi sarcomaAngiosarcoma 1. Presented by Peter Illei, M.D. and prepared by Carla Ellis, M.D.17-year-old girl with a large subcutaneous left shoulder mass