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| Branching patterns of the left portal vein and consequent implications in liver surgery: The left anterior sector |
| Mattia Garancini a , ∗, Mauro Alessandro Scotti a , Luca Gianotti a , Antonio Rovere b , Fabio Uggeri a , Marco Braga a , Fabrizio Romano a |
a Unit of Hepatobiliary Pancreatic Surgery, Department of General Surgery 1, ASST-Monza, San Gerardo Hospital, Milano-Bicocca University, via Pergolesi 33, 20900 Monza, MB, Italy
b Unit of Interventional Radiology, Department of Radiology, ASST-Monza, San Gerardo Hospital, Milano-Bicocca University, via Pergolesi 33, 20900 Monza, MB, Italy
∗ Corresponding author.
E-mail address: mattia_garancini@yahoo.it (M. Garancini). |
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Abstract There are still some open issues about the systematization of the knowledge of the branching of the left portal vein (LPV) and the division in anatomo-functional units within the left liver. The first controversial topic concerns the division of S4 in subsegments. The Brisbane 2000 system of Nomenclature of Hepatic Anatomy and Resections (B2000) [1] does not mention such subdivision, but in literature this is still a matter of discussion. Some scholars described S4 s vascularization as a “bouquet of vessels” from the right horn (the right distal branching at the tip of LPV) and found no rational in subdividing S4 [2]. On the contrary, others reported that S4 may have several portal branches originating even from the umbilical portion (UPLPV), the angle, or the transverse portion of the LPV (TPLPV) and concluded that frequently S4a (the superior portion of S4) and S4b (the inferior portion of S4) are independently supplied and represent two separated subsegments [3].
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2022, Vol. 21 
