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[Hepatocarcinogenesis in human liver].

Péter Nagy1, Viktória László, Zsuzsa Schaff

  • 1I. sz. Patológiai és Kísérleti Rákkutató Intézet, Semmelweis Egyetem, Budapest, Hungary. nagy@korb1.sote.hu

Magyar Onkologia
|August 5, 2006
PubMed
Summary

Pathologists increasingly identify preneoplastic liver lesions, including earliest dysplastic foci and dysplastic nodules. Advanced molecular techniques aid in classifying hepatocellular carcinoma (HCC) and identifying therapeutic targets.

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Area of Science:

  • Hepatology
  • Oncology
  • Pathology

Background:

  • Pathologists frequently encounter preneoplastic liver lesions due to advances in imaging and liver surgery.
  • Human hepatocarcinogenesis is now understood to progress through distinct stages, starting with dysplastic foci.

Purpose of the Study:

  • To delineate the stages of hepatocarcinogenesis, from early lesions to small hepatocellular carcinoma (HCC).
  • To highlight diagnostic and prognostic markers for these preneoplastic and neoplastic liver lesions.

Main Methods:

  • Histopathological examination of liver tissues.
  • Immunohistochemistry for endothelial markers (CD31, CD34) and prognostic markers (CD44, beta-catenin, p53).
  • Molecular techniques including global gene expression profiling.

Main Results:

  • Dysplastic foci are early precursors; large-cell variants do not progress. Dysplastic nodules show varying atypia.
  • Small HCC (<2 cm) can be early or advanced based on nodular type. Sinusoidal capillarization correlates with progression.
  • Specific immunostains and molecular changes offer prognostic value and potential for new classification and therapies.

Conclusions:

  • Understanding the stages of hepatocarcinogenesis, from dysplastic foci to HCC, is crucial for accurate diagnosis and prognosis.
  • Ancillary techniques, including molecular profiling, are vital for distinguishing lesions and identifying therapeutic targets for liver cancer.

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