Other Abdominal Vascular Findings

Arterial Findings

Context matters Many incidental arterial stenoses, dissections, and compression findings are managed by symptoms, organ perfusion, and interval change.

Visceral arterial dissection

Report the vessel, length, true/false lumen appearance, branch compromise, and any aneurysmal change.
Look for bowel ischemia, solid organ infarct, hemorrhage, rupture, or perivascular inflammatory change.
Urgent escalation is appropriate for symptoms, malperfusion, rupture concern, or enlarging aneurysm.

Stenosis / compression

Severe celiac or SMA stenosis is most important when there are symptoms, occlusion, ischemic findings, or major collateral pathways.
Celiac origin compression is often incidental; avoid implying median arcuate ligament syndrome without compatible symptoms.
Report associated post-stenotic dilation, collateralization, thrombosis, or bowel/solid-organ consequences.

Venous Findings

Acute versus chronic For abdominal venous thrombosis, the key radiology task is defining vessel involvement, extent, acuity, and downstream consequences.

Report thrombosis

Involved vessel and extent: portal, mesenteric, splenic, hepatic, renal, gonadal, iliac, or IVC.
Acute filling defect versus chronic contracted vein, wall thickening, cavernous transformation, or collaterals.
Bowel edema/ischemia, ascites, solid organ infarct, portal hypertension, malignancy, cirrhosis, or hypercoagulable context.

Follow-up cues

Chronic venous thrombosis with established collaterals and no acute filling defect often needs no imaging follow-up.
Acute, extensive, uncertain, or clinically important thrombosis should be managed clinically and may need CT, MR, or ultrasound follow-up.
IVC pseudothrombosis from contrast streaming can be clarified with delayed CT, ultrasound, or MR venography when needed.

Compression / Pelvic Veins

Do not overcall Venous compression and pelvic venous reflux are common incidental findings; symptoms determine whether the finding is clinically meaningful.

Compression syndromes

May-Thurner anatomy: left common iliac vein compression; no follow-up unless unilateral leg swelling or DVT is present.
Nutcracker anatomy: left renal vein compression; usually clinically unimportant without hematuria, proteinuria, or hypertension.
IVC and renal vein variants are usually asymptomatic but important for surgical or interventional planning.

Gonadal / pelvic veins

Ovarian vein dilation and reflux are common, especially in multiparous patients.
Pelvic congestion syndrome requires compatible chronic pelvic pain symptoms; imaging alone is not enough.
Asymptomatic dilated pelvic veins or ovarian vein reflux generally need no additional work-up.