Preneoplastic significance of hepatic iron-free foci in genetic hemochromatosis: a study of 185 patients.
Sublobular nodules of hepatocytes free of iron or exhibiting much less iron than the surrounding parenchyma, referred to in this study as iron-free-foci, are frequently found in the livers of patients with genetic hemochromatosis complicated by hepatocellular carcinoma. To test the hypothesis that such nodules are preneoplastic lesions, iron-free foci were sought in the initial liver biopsy specimens of 185 patients with untreated and uncomplicated genetic hemochromatosis. Iron-free foci were found in 14 (7.6%) patients, all men, aged from 38 to 76 yr, with heavy iron overload and with fibrosis or cirrhosis. Twelve patients with iron-free foci were followed for 0.9 to 15 yr (7 +/- 6 yr). In six (50%), HCC developed, compared with 2 (8%) from a control group consisting of 24 patients without IFF matched according to age, sex, degree of fibrosis, liver iron amount and follow-up duration. The mean number of iron-free foci per iron-free foci-positive specimen was 3.2 +/- 2.1. Ten patients had dysplastic aspects in their iron-free foci, and four had intrahepatocytic iron-positive inclusions at the periphery of iron-free foci. Proliferative cell nuclear antigen was positive in 75% of iron-free foci and in 24% +/- 21% of hepatocyte nuclei in iron-free foci. This study clearly demonstrates that iron-free foci are proliferative lesions and strongly suggests that such nodules are preneoplastic foci. Therefore the finding of IFF in the initial liver biopsy specimen from a patient with genetic hemochromatosis should lead to regular screening for hepatocellular carcinoma.
Deugnier
Y M
YM
Clinique des Maladies du Foie, Centre Hospitalier Régional et Universitaire, Rennes, France.
Charalambous
P
P
Le Quilleuc
D
D
Turlin
B
B
Searle
J
J
Brissot
P
P
Powell
L W
LW
Halliday
J W
JW
D000328:Adult; D000368:Aged; D006528:Carcinoma, Hepatocellular / Q000276:immunology / Q000378:metabolism* / Q000473:pathology; D005500:Follow-Up Studies; D006432:Hemochromatosis / Q000235:genetics / Q000378:metabolism*; D006801:Humans; D007501:Iron / Q000378:metabolism*; D008099:Liver / Q000276:immunology / Q000378:metabolism* / Q000473:pathology; D008113:Liver Neoplasms / Q000276:immunology / Q000378:metabolism* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009687:Nuclear Proteins / Q000032:analysis; D011230:Precancerous Conditions / Q000276:immunology / Q000378:metabolism* / Q000473:pathology; D018809:Proliferating Cell Nuclear Antigen
D009687:Nuclear Proteins; D018809:Proliferating Cell Nuclear Antigen; D007501:Iron