retroperitoneum, soft tissue Week 698: Case 3 April 26, 2023 pathadmin 1. Presented by Dr. Andres Matoso and prepared by Dr. Maryam Shabihkhani19 year old male with retroperitoneal massAngiosarcoma arising in teratomaTeratoma with exuberant vascular proliferationTeratoma with Masson"s papillary endothelial hyperplasiaMixed germ cell tumor with hemorrhage and reactive stroma Loading...