Review Article

Overview of Hepatocellular Adenoma in Japan

Table 1

Clinical and pathological findings of hepatocellular adenoma.

HNF1 𝛼 -inactivated
( 𝑛 = 2 )
𝛽 -catenin-activated
( 𝑛 = 2 )
Inflammatory HCA
( 𝑛 = 5 )
Unclassified
( 𝑛 = 4 )

Patients
 Age; mean ± SD (range)40.5 ± 4.9 (37–44)28.5 ± 3.5 (26–31)40.2 ± 22.8 (15–68)33.5 ± 14.1 (16–45)
 Sex (M/F)0/21/14/11/3
 Oral contraceptives0002
 Alcohol >40 g/day0020
 BMI >250020
 Other clinical backgroundPortal hypoplasia 1Hyperlipidemia 1Diabetes 2FAP 1
Background liver
 Steatosis 0132
 Fibrosis (F1/2/3/4)003 (2/1/0/0)2 (1/1/0/0)
Tumor
 Tumor size; mean ± SD (range)4.0 ± 1.4 (3–5 cm)17.5 ± 2.1* (16–19 cm)3.9 ± 2.6 (1.6–9 cm)4.4 ± 2.6 (1.5–7 cm)
 Unique/multiple1/12/03/21/3
 Steatosis1121
 Association of HCC0001

HNF1 𝛼 : hepatocyte nuclear factor 1 𝛼 ; HCA: hepatocellular adenoma; M: male; F: female; BMI: body mass index; FAP: familial adenomatous polyposis; HCC: hepatocellular carcinoma; * 𝑃 < 0 . 0 5 , compared to other groups.