Estimating liver weight of adults by body weight and gender

Abstract

AIM:To estimate the standard liver weight for assessing adequacies of graft size in live donor liver transplantation and remnant liver in major hepatectomy for cancer. METHODS:In this study, anthropometric data of body weight and body height were tested for a correlation with liver weight in 159 live liver donors who underwent donor right hepatectomy including the middle hepatic vein. Liver weights were calculated from the right lobe graft weight obtained at the back table, divided by the proportion of the right lobe on the computed tomography. RESULTS:The subjects, all Chinese, had a mean age of 35.8 ± 10.5 years, and a female to male ratio of 118:41. The mean volume of the right lobe was 710.14 ± 131.46 mL and occupied 64.55% ± 4.47% of the whole liver on computed tomography. Right lobe weighed 598.90 ±117.39 g and the estimated liver weight was 927.54 ± 168.78 g. When body weight and body height were subjected to multiple stepwise linear regression analysis, body height was found to be insignificant. Females of the same body weight had a slightly lower liver weight. A formula based on body weight and gender was derived: Estimated standard liver weight (g) = 218 + BW (kg) x 12.3 + gender x 51 (R 2 = 0.48) (female = 0, male = 1). Based on the anthropometric data of these 159 subjects, liver weights were calculated using previously published formulae derived from studies on Caucasian, Japanese, Korean, and Chinese. All formulae overestimated liver weights compared to this formula. The Japanese formula overestimated the estimated standard liver weight (ESLW) for adults less than 60 kg. CONCLUSION:A formula applicable to Chinese males and females is available. A formula for individual races appears necessary.

Outcomes and Durability of Hepatic Reduction after Combined Partial Hepatectomy and Cyst Fenestration for Massive Polycystic Liver Disease

“…Patients with massive PLD had hepatic volumes exceeding 6 times the mean volumes of noncystic, noncirrhotic livers. 11,12 Most patients in this series were Caucasian women with ADPKD. The overall favorable results from PHCF in our experience might be due, in part, to the sex (91% female) and age (48 years, female) of our patients.…”

Non-Invasive Radiofrequency Field Treatment to Produce Hepatic Hyperthermia: Efficacy and Safety in Swine

“…In the simplified approximation of infinite tissue planes of subcutaneous fat and liver exposed to a capacitive RF device (Supplementary Information Fig 7.) boundary conditions at the material interfaces leads to the equalities [26]:\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{upgreek} \usepackage{mathrsfs} \setlength{\oddsidemargin}{-69pt} \begin{document} }{}\begin{equation*} \varepsilon _{r, air}E_{ext}=\varepsilon _{r, fat}E_{fat}=\varepsilon _{r, liver}E_{liver} \end{equation*}\end{document} Combining equations 1–4 and substituting \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{upgreek} \usepackage{mathrsfs} \setlength{\oddsidemargin}{-69pt} \begin{document} }{}$\rho _{fat} = 0.9$ \end{document} g/mL and \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{upgreek} \usepackage{mathrsfs} \setlength{\oddsidemargin}{-69pt} \begin{document} }{}$\rho _{liver} = 1.06$ \end{document} g/mL [27], relative SAR for subcutaneous fat and liver was obtained (Figure 5). Throughout the frequency spectrum measured, the SAR for subcutaneous fat was 5.8 to 7.3-fold greater than that of liver.…”

Correlation between clinical evaluation of liver size versus ultrasonography evaluation according to body mass index (BMI) and biotypes

“…it is known that several factors can interfere with liver measurement, such as weight, height, age, gender, percussion technique, site of percussion, phase of respiration, anatomical abnormalities, obesity, large-volume ascites, cirrhosis, tumors, hepatomegaly, personal habits and patient's position during the examination 11,13,14,18,[22][23][24][25] .…”