A study on the weights and ratios of hepatic segments in 438 adult Japanese autopsies.
This study presents relationships of the actual weights and their weight ratios of each hepatic segment. A total of 438 adult Japanese autopsies performed at the Tokyo Metropolitan Medical Examiner's Office were used. Examined cases consisted of 258 normal livers and 182 pathological livers. Weights of the whole liver, the right and left surgical hepatic lobes, and each hepatic segment, and the results of their statistical analyses, are reported by age and sex. The normal 256 liver weights were significantly different according to age (P < 0.001) and sex (P = 0.001). An approximate liver weight per kilogram of body weight is roughly about 25 g in all ages and both sexes. The weight ratios of the lateral, medial, anterior, and posterior segments were approximated to be 20:20:35:25, respectively, not only in normal and pathological livers in which the liver retained an ordinary shape but also in adult age groups and both sexes.
Aso
Kazunori
K
Department of Surgery, Kitasato University School of Medicine, Kanagawa, Japan. asokaaso@muse.dti.ne.jp
Takeuchi
Akihiro
A
Okudaira
Masahiko
M
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D044466:Asian People; D001996:Bronchopneumonia / Q000473:pathology; D002318:Cardiovascular Diseases / Q000473:pathology; D002561:Cerebrovascular Disorders / Q000473:pathology; D004210:Dissection / Q000379:methods; D005260:Female; D006801:Humans; D007564:Japan; D008099:Liver / Q000033:anatomy & histology* / Q000473:pathology; D016031:Liver Transplantation; D008297:Male; D008875:Middle Aged; D009929:Organ Size; D055815:Young Adult