人脾动脉在脾内的节段性分布

THE SEGMENTAL DISTRIBUTION OF THE SPLENIC ARTERY IN THE HUMAN SPLEEN

以解剖、动脉造影和过氯乙烯动脉铸型方法观察了72例脾脏,结果为:1.儿童脾后缘切迹的出现率较成人高。深切迹与“少血管区”相当,可作为脾叶、段切除的参考标志。2.脾动脉近距分支22例,远距分支50例。分出一支脾叶动脉者3例。二支者63例。三支者9例。3.建议按脾段动脉的支数将脾分为三个基本段型:三段型、四段型和五段型。再根据有无上下极动脉将三个基本类型各分为3个亚型。4.脾内弓型动脉吻合较粗大,脾部分切除时需注意。

The splenic artery and its ramification were studied in 72 specimens,and the notches of the spleen were examined.Results are as follows:1.The splenic artery gives off only one major superior lobar artery in 3 cases;two branches,the superior and inferior lobar arteries in 63 cases;and three main branches,the superior,middle and inferior lobar arteries in 6 cases.2.The spleen can be divided into 3~5 segments according to the number and distribution of the splenic segmental arteries,and it may be further subdivided intoⅢ_(0),Ⅲ_(1),Ⅲ_(2),Ⅳ_(0),Ⅳ_(1),Ⅳ_(2),Ⅴ_(0) andⅤ_(1) types according to the presence and number of the polar arteries(The Roman numerals indicate the numbers of the segemental arteries,while the Arabic numbers of the polar arteries).3.In most of the cases there are 2~3 notches on the anterior border of the spleen.In children the number of the notches on the posterior border is more than that in adults.An oblique or transverse fissure of the diaphragmatic surface is found in three spleens,which divides the spleen into the superior and inferior parts.The deep notches(≥8mm)may represent the surface marking of the lobes or the segments of the spleen.