A diagnostic dilemma of fever and back pain postpartum.

A 26-year-old woman presented with fever, chills, and back pain 6 weeks postpartum. An infused CT scan of the abdomen and pelvis with IV contrast confirmed septic pelvic vein thrombophlebitis as the diagnosis. To the best of our knowledge, this is the first case report describing such a massive thrombophlebitis extending from the superior vena cava to the femoral vein inferiorly responsive to conventional anticoagulation therapy. This exceptional case reminds us to entertain septic pelvic thrombophlebitis in the differential of any patient who presents with fever and back pain of unknown etiology.