BCL6 and intrahepatic cholangiocarcinoma: The ICC classifies double-hit (DH) HGBCL into two entities, namely HGBCL with MYC and BCL2 rearrangements (HGBCL-DH-BCL2) (with or without BCL6 rearrangement) and a provisional entity of HGBCL with MYC and BCL6 rearrangements (HGBCL-DH-BCL6).