期刊
TOXICOLOGIC PATHOLOGY
卷 33, 期 1, 页码 165-174出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/01926230590888324
关键词
liver; hepatocyte; nodular hyperplasia; proliferative; hyperplasia; regenerative hyperplasia; adenoma
资金
- NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES [Z01ES046004] Funding Source: NIH RePORTER
Over the years, the most appropriate classification scheme for nodular proliferative lesions of the hepatocyte has been heavily debated. In the most recent guidelines there appears to be a consensus for classifying these lesions as hepatocellular adenoma, hepatocellular carcinoma, or regenerative hyperplasia. Also, large foci of cellular alteration may appear somewhat nodular. Some nodular hepatocellular lesions from a group of 7 studies of dioxin and dioxin-like compounds conducted by the National Toxicology Program did not readily fit into these categories. Some of these lesions had morphologic features consistent with hyperplasia. However, there was not sufficient morphological or biological evidence to conclude that the entire response was regenerative. In other instances, these lesions had sonic features resembling adenoma, but contained a prominent component of biliary epithelium and/or oval cells. This component does not appear to be well described in the literature, and while its presence suggested a nodule to be nonneoplastic, this is inconclusive. This paper describes the morphology of these lesions, as well as the diagnostic approach taken in this series of studies.
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