Hepatic and extrahepatic malignancies in autoimmune hepatitis. A long-term follow-up in 473 Swedish patients.
OBJECTIVE
Autoimmune Hepatitis (AIH) is a liver disease which may lead to liver cirrhosis. Cirrhosis is a well-known risk factor for hepatocellular cancer. Lymphoma is a disease, where immune modulating drugs as well as the autoimmune disease itself may contribute to the elevated risk. The aim was to investigate the risks of malignancies in a large cohort of AIH patients.


METHODS
Four hundred and seventy-three patients with AIH were matched to the Swedish national cancer register as well as to the death cause register.


RESULTS
We found an overall higher risk of malignancies in the cohort of AIH patients from the date of diagnosis with a SIR of 1.51 (95% CI 1.10-2.03). SIR in the subpopulation of well defined catchment areas and complete case finding was 23.28 (95% CI 7.5-54.34) for HCC. Lymphomas were found a SIR of 13.09 (95% CI 4.22-30.56).


CONCLUSIONS
There was an overall increased risk of malignancies in a cohort of AIH patients, which manly was caused by hepatobiliary cancers. However, the true risk of HCC in an AIH cirrhotic cohort has yet to be investigated. A significantly higher risk of lymphomas was also found, but no clear cut association to the use of immune modulators.
Werner
Mårten
M
Department of Medicine Sections for Hepatology and Gastroenterology, Umeå University Hospital, SE-90185 Umeå, Sweden. marten.werner@vll.se
Almer
Sven
S
Prytz
Hanne
H
Lindgren
Stefan
S
Wallerstedt
Sven
S
Björnsson
Einar
E
Bergquist
Annika
A
Sandberg-Gertzén
Hanna
H
Hultcrantz
Rolf
R
Sangfelt
Per
P
Weiland
Ola
O
Danielsson
Ake
A
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D006528:Carcinoma, Hepatocellular / Q000209:etiology; D002648:Child; D002675:Child, Preschool; D003110:Colonic Neoplasms / Q000209:etiology; D005260:Female; D005500:Follow-Up Studies; D019693:Hepatitis, Autoimmune / Q000150:complications*; D006801:Humans; D008113:Liver Neoplasms / Q000209:etiology*; D008228:Lymphoma, Non-Hodgkin / Q000209:etiology; D008297:Male; D008875:Middle Aged; D012878:Skin Neoplasms / Q000209:etiology