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Lymphoproliferative disorders in chronic hepatitis C.

R Idilman1, A Colantoni, N De Maria

  • 1Department of Medicine, Division of Gastroenterology and Liver Transplantation, Loyola University Medical Center, Maywood, IL, USA. idilman@dialup.ankara.edu.tr

Journal of Viral Hepatitis
|July 3, 2004
PubMed
Summary

Chronic hepatitis C virus (HCV) infection is linked to lymphoproliferative disorders (LPDs). About 14% of HCV patients have monoclonal gammopathy, often benign, but a significant portion indicates associated malignant B-cell LPDs.

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Area of Science:

  • Hepatology
  • Hematology
  • Oncology

Background:

  • Chronic hepatitis C virus (HCV) infection is a known risk factor for lymphoproliferative disorders (LPDs).
  • Understanding the spectrum of LPDs, including monoclonal gammopathies, in HCV patients is crucial for early diagnosis and management.

Purpose of the Study:

  • To determine the prevalence and characteristics of monoclonal gammopathy and LPDs in individuals with chronic HCV infection.
  • To investigate the association between monoclonal gammopathy and malignant LPDs or plasma cell disorders in this cohort.

Main Methods:

  • Studied 233 patients with chronic HCV, examining serum and urine for monoclonal gammopathy.
  • Performed bone marrow aspirate and biopsy for patients with monoclonal gammopathy.
  • Analyzed associations between monoclonal gammopathy, LPDs, and clinical/virological factors.

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Main Results:

  • Monoclonal gammopathy was detected in 13.7% (32/233) of HCV patients.
  • Of those with monoclonal gammopathy, 75% were benign, while 25% were associated with malignant LPDs or plasma cell disorders.
  • The overall prevalence of malignant LPDs/plasma cell disorder in HCV patients was 4.3%.
  • Mixed cryoglobulinaemia was strongly associated with underlying malignant disorders.

Conclusions:

  • Monoclonal gammopathy is present in approximately 14% of chronic HCV patients.
  • Over a quarter of these cases are linked to malignant B-cell LPDs.
  • The prevalence of LPDs is higher in HCV-infected individuals compared to the general population.