Pina Lucas N, Samoilovich Franca, Urrutia Sebastián, Rodríguez Agustín, Alle Lisandro, Ferreres Alberto R
Department of Anatomy, University of Buenos Aires (UBA), Buenos Aires, Argentina.
Department of Surgery, University of Buenos Aires (UBA), Buenos Aires, Argentina.
Surg J (N Y). 2015 Nov 19;1(1):e23-e27. doi: 10.1055/s-0035-1567879. eCollection 2015 Dec.
Heister valves are mucosal folds located on the endoluminal surface of the cystic duct (CD) and were first described by Lorenz Heister in 1732. Their presence could represent an obstacle that impedes transcystic exploration. It has been suggested that the distribution of Heister valves follows a steady rhythmic pattern in a spiral disposition; however, there is no conclusive data to support this claim. The aim of this study was to describe the main characteristics of the CD and Heister valves in adult human cadavers. A descriptive cross-sectional study was performed on 46 extrahepatic biliary tracts. The CD has an average length of 25.37 mm and diameter of 4.53 mm. The most frequent level of junction was the middle union. Heister valves were present on 32 CDs; in most cases, they were distributed uniformly on the duct and presented an oblique disposition. A nonreticular pattern was the most frequent reticular pattern. The most frequent type of the nonreticular type was the B1 subtype. The most frequent type of distribution was the nonreticular type, particularly the B1 type. The cystic fold could hinder transcystic exploration. The cysticotomy incision should not be determined by the distribution of the fold on the CD. The morphology of the Heister valves does not show evidence of a steady systematic pattern.
海斯特瓣是位于胆囊管（CD）腔内表面的黏膜皱襞，于1732年由洛伦兹·海斯特首次描述。它们的存在可能是阻碍经胆囊探查的一个障碍。有人提出，海斯特瓣的分布呈螺旋状排列且遵循稳定的节律模式；然而，尚无确凿数据支持这一说法。本研究的目的是描述成年人体尸体中胆囊管和海斯特瓣的主要特征。 对46条肝外胆管进行了描述性横断面研究。 胆囊管平均长度为25.37mm，直径为4.53mm。最常见的汇合水平是中间汇合。32条胆囊管存在海斯特瓣；在大多数情况下，它们在胆管上均匀分布并呈倾斜排列。非网状模式是最常见的网状模式。非网状类型中最常见的是B1亚型。最常见的分布类型是非网状类型，尤其是B1型。 胆囊皱襞可能会阻碍经胆囊探查。胆囊切开术切口不应由胆囊管上皱襞的分布决定。海斯特瓣的形态未显示出稳定的系统模式的证据。
