Fig. 10

A palpable pelvic mass that was diagnosed as an ovarian tumor by the gynecologist in a 57-year-old woman who presented in gynecological clinics. MRI scan (a–c) showed a pelvic mass with hemorrhage-like confounding hyperintensity on T₁WI and hypointensity on T₂WI/FS internally. An enhanced scan represented heterogeneous enhancement. The mass was closely related to the small intestine, and blood supply by large mesenteric vessels (arrows) could also be observed on enhanced sagittal MRI (d) and axial CT (e) images, suggesting intestinal original disease. However, the radiologist mistook small intestinal stromal tumors as ovarian tumors because of the gynecologist’s diagnosis. This is classified as attribution bias