Abstract
Purpose
Associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) can achieve marked future liver remnant (FLR) hypertrophy but this procedure is associated with a risk of mortality due to liver failure because of an insufficient FLR functional increase, a situation comparable to small-for-size syndrome (SFSS) after living-donor liver transplantation (LDLT).
Methods
The clinical data, morphologic volume changes, and histopathologic and immunohistochemical findings in hepatocytes and bile ductules were compared between ALPPS (n = 10) and LDLT with a risk for SFSS (n = 12).
Results
Although the patient characteristics and short-term outcome differed between the groups, the mean hypertrophy ratios with respect to liver volume for the FLR after performing the first-stage ALPPS procedures resembled those in small-for-size grafts after similar time intervals: 1.702 ± 0.407 in ALPPS vs. 1.948 ± 0.252 in LDLT (P = 0.205). The histologic grades for sinusoidal dilation (P = 0.896), congestion (P = 0.922), vacuolar change (P = 0.964), hepatocanalicular cholestasis (P = 0.969), and ductular reaction (P = 0.728) within the FLR at the second-stage operation during ALPPS or implanted graft were all similar between the groups.
Conclusions
The hepatic regenerative process may be similar in ALPPS and LDLT using a small-for-size graft. Reducing the hepatic vascular inflow that may be excessive for the FLR volume during the first stage of ALPPS might enhance the functional recovery since measures with a similar effect appear to lessen the likelihood of SFSS.
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Abbreviations
- ALPPS:
-
Associating liver partition and portal vein ligation for staged hepatectomy
- CK:
-
Cytokeratin
- CT:
-
Computed tomography
- DAB:
-
Diaminobenzidine
- FLR:
-
Future liver remnant
- GRWR:
-
Graft-to-recipient weight ratio
- HCV:
-
Hepatitis C virus
- LDLT:
-
Living-donor liver transplantation
- MDCT:
-
Multidetector computed tomography
- PT-INR:
-
Prothrombin time international normalized ratio
- SFSS:
-
Small-for-size syndrome
- SLV:
-
Standard liver volume
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Wakabayashi, T., Tanaka, K., Shiozawa, T. et al. Liver regeneration after performing associating liver partition and portal vein occlusion for staged hepatectomy (ALPPS) is histologically similar to that occurring after liver transplantation using a small-for-size graft. Surg Today 51, 374–383 (2021). https://doi.org/10.1007/s00595-020-02097-1
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DOI: https://doi.org/10.1007/s00595-020-02097-1