The shortage of organ donors for low-weight liver transplant recipients, especially small children, has led to the development of new surgical techniques to increase the donor pool. Almost all of these techniques use the left lateral segment (Couinaud's segments II and III), but even this graft could be too large for children under 10 kg, and further reduction could be necessary. Few articles address the issue of monosegmental liver transplantation. Available articles are with small sample sizes or even case reports, which makes it difficult to draw conclusions about indication and outcome for monosegmental grafts. A search of the MEDLINE databases using the terms "Liver Transplantation" and "Monosegmental" or "Monosegments" limited to title or abstract with publication in the English language was conducted. The data from each study were selected and analyzed, regarding donor status (living or cadaveric), donor weight, surgical techniques used in left lateral further reduction, recipient indication for liver transplantation, age and recipient weight, graft-to-recipient body weight ratio, segment uti-

SG and GB were equally effective in promoting weight loss after 90 days. However, whereas SG was associated with better early remission rates for hypertension, GB was more effective in fasting blood glucose control but not in HOMA-IR and HbA1c levels. There was no difference in the protein or vitamin deficiencies of the two groups.

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Under the conditions of this study, the PPV index was not shown to be a reliable predictor of FR during OLT. Further studies are warranted to elucidate the role of this and other dynamic indexes in this specific setting.