The Effect of Portal Diversion on the Early Stages of Liver Carcinogenesis in the Rat

Lorne E. Rotstein, Leonard Makowka, George Lee, Emmanuel Farber – 1 January 1982 – The effect of portal diversion by ameroid constriction was studied in the carcinogenic process in the rat after initiation of foci by diethylnitrosamine and after the establishment of putative preneoplastic nodules. Portal diversion or portal diversion plus partial hepatectomy did not act to promote or select for the development of nodules. Furthermore, portal diversion did not alter the natural history of established nodules.

An Evaluation of Cellular Lineages in the Pathogenesis of Experimental Hepatocellular Carcinoma

Stewart Sell, Hyam L. Leffert – 1 January 1982 – Analysis of liver from rats exposed to chemical hepatocarcinogens has led to a model that postulates sequential premalignant changes, culminating in hepatoma formation from neoplastic nodules. Several experimental protocols devised during the last quarter century have focused upon this lineage model. But proof that neoplastic nodules are the definitive premalignant lesions has not been achieved.

Delayed HBsAg clearance in chronic hepatitis B viral infection

Karen L. Lindsay, Allan G. Redeker, Mary Ashcavai – 1 November 1981 – Seven patients are described in whom HBsAg persisted for 13 to 98 months after acute viral hepatitis B and then became nondetectable. All patients subsequently developed anti‐HBs. During the period of HBs‐antigenemia, liver biopsies in five patients showed persistent viral hepatitis. Retrospectively, impending negativity of HBsAg was predictable in five patients by a decrease in HBsAg titer, and in four patients by persistent normalization of serum alanine aminotransferase.

Globular hepatic amyloid–‐an unusual morphologic presentation

Gary C. Kanel, Toshikazu Uchida, Robert L. Peters – 1 November 1981 – Hepatic amyloid, when identified, is usually located in the sinusoids, portal tracts, and arterioles. We report 14 cases of hepatic amyloidosis where eosinophilic globules having the histochemical and electron microscopic features of classic amyloid were found. The globules were round to oval, 5 to 40 μm in diameter, and were found within the space of Disse as well as aggregated within the portal tracts.

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