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Question category: Gastroenterology

A 58 year old female who has a history of recurrent UTIs, for which she is on long term nitrofurantoin is found to have deranged LFTs. She is complaining of some RUQ pain and on examination there is evidence of hepatomegaly. Autoantibodies reveal a positive LKM1 and her immunoglobulins are increased. What is the most likely diagnosis?