Background: Portal vein system thrombosis (PVT) is an infrequent but potentially serious complication after laparoscopic splenectomy. Patients with β-thalassemia are at higher risk as they have splenomegaly and hypercoagulability.

Subjects And Methods: Forty-eight β-thalassemia patients who underwent hand-assisted laparoscopic splenectomy or laparoscopic splenectomy were studied prospectively with pre- and postoperative Doppler ultrasonography or computed tomography scanning.

Results: The incidence of PVT was 8.3% (95% confidence interval [CI] 0.2%-16.4%) (4 of 48 patients). Spleen weight was the only independent factor associated with the presence of PVT. The odds ratio for spleen weight (100 g increase) was 1.46 (95% CI 1.10-1.94, P=.010). Receiver operator characteristic curve analysis showed that the optimal cutoff of spleen weight to the prediction of PVT was 1543 g. Thrombosis resolution was observed after a median of 165 days.

Conclusions: Patients with β-thalassemia who undergo laparoscopic-assisted splenectomy are at high risk of postoperative PVT. Close postoperative surveillance and aggressive coagulation prophylaxis are needed in these patients. Larger studies are required to confirm the present findings.

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http://dx.doi.org/10.1089/lap.2012.0268DOI Listing

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