Autoimmune overlap syndrome was found in 2 cases (AIH/PBC) with PBC,1 case (PSC/AIH) with PSC and 1 case (PBC/AIH) with AIH.

• AIH与PBC的ANA阳性率分别为10 0%25和 60%25 ；Fisher精确检验在a =0 .；0 0 2水准二者无显著差异。