Structural Integrity and Identification of Causes of Liver Allograft Dysfunction Occurring More Than 5 Years After Transplantation

Abstract

The clinicopathologic features of liver allograft dysfunction occurring in 51 symptomatic recipients after more than 5 years' survival (mean 7.1 years) with the same hepatic allograft were compared with those of a similar group of 14 asymptomatic patients (mean survival, 9.9 years) who underwent a nonclinically indicated protocol liver biopsy evaluation. Predictably, patients who had clinically indicated biopsies more frequently showed histopathologic alterations (76% versus 36%, p < 0.002). After detailed clinicopathologic correlation, the changes in the symptomatic patients were attributed primarily to definite or presumed viral hepatitis in 17 of 51 (33%) patients, 11 of whom had recurrent viral disease; seven of 51 (14%) had nonviral recurrent original disease, three (6%) had obstructive cholangiopathy, and 11 (22%) had acute and/or chronic rejection. In 13 of 51 (25%) of the symptomatic patients, the clinical and pathologic abnormalities were minimal. Long-term liver allograft survival in nine of 14 (64%) of the asymptomatic patients was associated with minimally abnormal histologic alterations. Two of the asymptomatic patients had obstructive cholangiopathy; two others has recurrence of the original disease and one has possible viral hepatitis. Viral hepatitis types B and C, alcoholic liver disease, autoimmune hepatitis, granulomatous hepatitis (not otherwise specified), and probably primary biliary cirrhosis and primary sclerosing cholangitis were shown to recur after hepatic transplantation. The histopathologic changes associated with acute and chronic rejection frequently overlapped with other syndromes causing late dysfunction, such as chronic viral or autoimmune hepatitis, primary biliary cirrhosis, or primary sclerosing cholangitis; more than one insult could be identified in 15 cases, which made the differential diagnosis of causes of late liver allograft dysfunction much more difficult than early after hepatic transplantation. It is important to correlate the biopsy findings with the liver injury tests, the results of viral and autoimmune antibody serologic studies, and review of previous biopsies and to be aware of the original disease, recent changes in immunosuppression, and results of therapeutic intervention(s) to identify correctly the causes of liver allograft dysfunction in this patient population.

Weaning of Immunosuppression in Liver Transplant Recipients12

“…Weaning cannot be safely done unless rescue therapy with TAC is available. Finally, this experience has confirmed the frequency with which late hepatic allograft dysfunction is due to causes other than rejection (18,19).…”

Liver biopsy interpretation for causes of late liver allograft dysfunction

“…), (5) metabolic disorders, including nonalcoholic steatohepatitis, and (6) other diseases, such as idiopathic granulomatous hepatitis, 4 postinfantile giant cell hepatitis, 5 and Budd-Chiari syndrome, 6 that are of uncertain etiology or multifactorial in origin. Recurrent infectious and dysregulated immunity diseases pose the most difficult diagnostic challenges and are addressed herein.…”

Development of autoimmune hepatitis following liver transplantation for primary biliary cirrhosis

“…[2][3][4][5] The possibility that PBC might recur in the transplanted liver was first reported by Neuberger et al in 1982, 6 although only more recently has it been widely accepted with well-documented series from several centers. [7][8][9][10][11][12][13][14] Although in most instances clinical manifestations of recurrent PBC are minimal, 3 recurrence of the disease post-transplantation is of great interest, because it offers a human model in which to identify factors of potential importance in disease development.…”