HASSAN , D.O. et al. 2025. Dedifferentiated liposarcoma (DDLPS) is a rare subtype of retroperitoneal sarcoma (RPS) arising from mesenchymal tissue, commonly in fat-rich regions such as the retroperitoneum. We present a case of DDLPS in a 61-year-old male who presented with an abdom. TPM – Testing, Psychometrics, Methodology in Applied Psychology. 32, S2(2025) : Posted 09 June (Jun. 2025), 1598–1601.