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Histopathologic features of liver biopsy specimens in sickle cell disease
L R Mills1, D Mwakyusa, P F Milner
1Department of Pathology, Veterans Administration Medical Center, Augusta, GA 30910.
Insights
Sickle cell anemia patients
Area of Science:
- Hematology
- Hepatology
- Pathology
Background:
- Sickle cell anemia (SCA) can lead to liver complications.
- The exact causes of liver disease in SCA are debated, including ischemia and other factors.
Purpose of the Study:
- To evaluate the causes of liver disease in sickle cell anemia patients.
- To determine the roles of local ischemia versus non-sickling factors.
Main Methods:
- Retrospective review of liver biopsy results and clinical data.
- Analysis of 13 patients with sickle cell anemia.
Main Results:
- Biopsies showed varied findings, including normal, cirrhosis, cholestasis, hepatitis, Budd-Chiari syndrome, and bile duct obstruction.
- Multiple blood transfusions and gallstones were common risk factors.
- Observed changes align with expectations for transfused patients with gallstones.
Conclusions:
- Liver disease in SCA is multifactorial.
- Factors unrelated to sickling, such as transfusions and gallstones, significantly contribute to liver pathology in SCA patients.
Abstract:
Liver biopsy results and clinical records from 13 patients with sickle cell anemia were reviewed to assess the relative importance of local ischemia or of factors unrelated to sickling as a cause of their liver disease. Two of the biopsy specimens were normal and one showed cirrhosis. Nine patients had received multiple blood transfusions and nine had cholelithiasis, of whom two also had choledocholithiasis. Seven had both risk factors. Five had lobular cholestasis and four had acute or chronic hepatitis. One biopsy specimen showed changes of the Budd-Chiari syndrome. Another showed clear portal tract changes of large bile duct obstruction but no mechanical blockage of the biliary system; this suggests the thickened bile as postulated by Muirhead. Otherwise the changes observed were those to be expected in a heavily transfused population with a high prevalence of gallstones.