To diagnose mesenteric venous thrombosis, doctors rely on imaging studies. CT scans are typically the first step, as they are widely available and can highlight areas of reduced blood flow in the intestines. For a more detailed view, MR venography or CT angiography may be used to confirm the presence of a clot in the veins. In some cases, angiography, a more invasive procedure, may be necessary to get a clearer picture.

Most cases of mesenteric venous thrombosis are treated without surgery. The primary treatment is anticoagulation, which involves using medications to thin the blood and prevent further clotting. Patients are also given fluids, put on bowel rest, and closely monitored for any signs of worsening conditions. Antibiotics may be prescribed to prevent infections in the bowel.

Surgery is considered when there are signs of bowel damage or infarction. An open surgical approach is used to remove the damaged section of the intestine. Sometimes, a second operation is planned to ensure all affected areas are treated. The goal is to preserve as much of the intestine as possible while removing the non-viable segments.

Prompt diagnosis and appropriate treatment are crucial to managing mesenteric venous thrombosis effectively.