الفهرس 
Anatomy of the portal system
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Abstract
Portal vein thrombosis is a rare but potentially fatal complication of splenectomy. The incidence of portal vein tlirombosis appears low, but is probably underestimated because symptoms, such as abdominal pain and fever, are non-specific and portal vein thrombosis can easily develop without any symptoms.
Identification of patients with portal vein thrombosis is crucial to allow early treatment and prevent potentially fatal complications >such as bowel infarction or later portal hypertension (van ’t Riet et al 2000).
The aim of this retrospective study was to assess me incidence, risk factors, treatment and outcome of portal vein thrombosis alter splenectomy in patients included in this series.
Fifty patients underwent splenectomy either elective or emergency. The complete medical records of these patients were reviewed regarding personal data, indications of splenectomy, risk factors, prophylactic anticoagulants, presentation of PVT management and outcome.
Among these patients 11 developed PVT, all these patients had preoperative portal hypertension, all these patients underwent splenectomy with ligation of short gastric and left gastric veins. All of them received postoperative anticoagulant prophylaxis. Seven of tliese patients developed PVT early during the same admission after splenectomy operation within 3-5 days after the operation patients developed PVT after discharge 3 of them within 2 months