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A meticulous preoperative workup should be performed to exclude other causes of NC even if signs of BA are present, especially if features such as giant cells in histopathology are present. This involves completing the NC workup in parallel involving all common causes of NC rather than performing them in series to avoid loss of valuable time and efforts.

Hypergammaglobulinemia and a high occurrence of autoantibodies are encountered in HAV infection. This may support the immunological basis of its pathogenesis. Moreover, the higher gammaglobulins in fulminant HAV, with an insignificant difference from that in AIH, suggest that a more aggressive immunological reaction is related to this presentation.

Urinary urobilinogen is a simple, non-invasive, cheap, sensitive and specific marker, especially if combined with γ-GT, which can be used in diagnosis of BA, especially in developing countries.

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