Clinical Significance of Splenic Vessels and Anatomical Features in Laparoscopic Splenectomy.

Laparoscopic splenectomy (LS) has become the standard treatment for benign hematological disorders and hypersplenism. However, serious complications such as pancreatic fistula and portal venous thrombosis (PVT) sometimes occur. We investigated the clinical significance of splenic vessels and anatomical features in LS. Patient data were collected from 32 patients who underwent LS. The indications for LS were hypersplenism due to liver cirrhosis, idiopathic thrombocytopenic purpura, hereditary spherocytosis, and others. Close contact of pancreatic tail with splenic hilum, spleen volume, and diameters of splenic vessels were evaluated on computed tomography images. Close contact of pancreatic tail with splenic hilum was recognized in 15 of the patients. The close contact was significantly associated with operation time ( = .038), spleen volume ( = .021), and spleen volume/body surface area (BSA) ratio ( = .001). In multivariate analysis, spleen volume/BSA ratio was an independent factor for close contact ( = .022). PVT occurred in 3 cirrhosis patients, and the diameter of the splenic vein (SV) was significantly associated with PVT as a result of multivariate analysis ( = .027). Close contact of the pancreatic tail with the splenic hilum may cause a longer operation time at LS and be associated with spleen volume/BSA ratio. A larger SV diameter in cirrhosis patients may be related to PVT after LS.