Retroperitoneal Hemangiopericytoma is related to hemangiopericytoma, malignant and vascular cancer. An important gene associated with Retroperitoneal Hemangiopericytoma is IGF2 (Insulin Like Growth Factor 2), and among its related pathways/superpathways are PI3K-Akt signaling pathway and Signaling by Receptor Tyrosine Kinases. Affiliated tissues include breast and lung.