Splenic Cysts: A Strong Indication for a Minimally Invasive Partial Splenectomy. Could the Splenic Hilar Vasculature Type Hold a Defining Role?

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Abstract
Background: The aim of the study is to assess the impact of the splenic hilar vasculature configuration on the amount of remnant splenic parenchyma volume after partial splenectomy for splenic cysts.Methods: The data of all patients receiving a splenectomy for a splenic cyst from 2002 to 2016 at the Center of General Surgery and Liver Transplantation of Fundeni Clinical Institute were retrospectively reviewed. The size and location in the splenic parenchyma of the cyst and the splenic hilar vasculature type were assessed for each patient with a splenectomy.Results: Thirty‐one patients with non‐parasitic and 32 patients with hydatid cysts were recorded. In cases of centrally located cysts, a total splenectomy was performed for the majority of cases, while in peripheral cysts a spleen‐preserving surgery was feasible for most of the patients (p = 0.001). The size of the cyst was significantly higher in the group of patients with a total splenectomy, compared with the group with a partial splenectomy (p = 0.003). In the subgroup with a distributed arterial pattern, preservation of more than 50% of the initial parenchyma was achieved in a significantly higher proportion of patients, compared with the subgroup of patients with a magistral pattern (p = 0.012).Conclusion: Besides cyst size or peripheral location in the splenic parenchyma, the vascular pattern is also considered another decisive factor that associates with successful conservative or minimally invasive approach.

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