Introduction And Importance: Solitary fibrous tumor (SFT) is an uncommon mesenchymal tumor that can manifest in a variety of locations, including the retroperitoneum. The most effective standard diagnostic approach and treatment is yet to be determined due to unpredictable behavior of SFT, including retroperitoneal SFT.
Case Presentation: A 43-year-old female with a retroperitoneal SFT presented with a palpable mass and symptomatology.