Kittredge R D, Gordon D H, Mitty H A, Sprayregen S
Radiology. 1979 Apr;131(1):37-41. doi: 10.1148/131.1.37.
The patterns of collateral circulation which develop following obstruction of the inferior vena cava have been classically divided into three groups depending upon the level of obstruction, i.e., infrarenal, middle caval, and upper caval. The portal vein can play an active role at all three levels. Multiple potential routes to the portal vein are described and 6 cases are presented.
下腔静脉阻塞后形成的侧支循环模式，传统上根据阻塞水平分为三组，即肾下型、腔静脉中段型和腔静脉上段型。门静脉在所有三个水平均可发挥积极作用。本文描述了通向门静脉的多种潜在途径，并展示了6例病例。
