Figure 14. Ruptured ectopic pregnancy in a 42-year-old woman who presented with acute right flank pain. Unenhanced helical CT scan shows a hemorrhagic mass in the right adnexa (arrow), a finding that is associated with hemoperitoneum. No obstructing stone was seen. Imaging was performed before results of a urine pregnancy test were known. The beta subunit of human chorionic gonadotropin was later found to be positive. Surgical findings helped confirm the diagnosis of ruptured ectopic pregnancy.