Ovarian Vein Thrombosis (Postpartum) Imaging

Step-by-step decision

Choose step by step as prompted; reaching an endpoint gives the management recommendation. You can go back a step or restart anytime.

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Full pathway

1. [Decision] Suspected postpartum ovarian vein thrombosis
   Postpartum fever + lower/flank abdominal pain — suspected ovarian vein thrombosis? (POVT is rare but serious (Virchow's triad); 80–90% right-sided (the right ovarian vein is compressed by the enlarged dextrorotated uterus, the left has retrograde flow); usually within 10 days postpartum (2–15 days); lower/flank pain + fever + leukocytosis, a palpable cord-like mass. Easily misdiagnosed: appendicitis/pyelonephritis/adnexal torsion/TOA/endometritis/septic pelvic thrombophlebitis.)
   • Contrast CT shows an enlarged ovarian vein, intraluminal filling defect + peripheral enhancement (extending to the IVC/renal vein) → Contrast CT confirmed → anticoagulation + antibiotics
   • Ultrasound limited by bowel gas, uncertain → Ultrasound uncertain → contrast CT
2. [End] Ultrasound uncertain → contrast CT
   Ultrasound (color Doppler) is limited by bowel gas and operator-dependent: may show a tubular an/hypoechoic structure with absent flow, but contrast CT (or MRI) is preferred for confirmation; coronal/sagittal planes to assess thrombus extent and extension to the IVC/renal vein.
3. [End] Contrast CT confirmed → anticoagulation + antibiotics
   Contrast CT confirmed (enlarged ovarian vein, central low-density thrombus + peripheral ring enhancement, extending cranially from the adnexa to the renal vein/IVC, surrounding inflammatory stranding): anticoagulation (LMWH/heparin → oral) + broad-spectrum IV antibiotics (often with septic thrombophlebitis); thrombus extending into/floating in the IVC, complicating PE, or anticoagulation contraindicated → IVC filter; assess for pulmonary embolism (~13%).

Source guidelines & references

• Postpartum ovarian vein thrombosis imaging and management (contrast CT preferred)

This pathway is our own synthesis of the decision logic in the guidelines above (not the guideline verbatim); thresholds and workflows change as guidelines update — in practice follow the latest guideline, your institution's protocol and the individual patient.

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