BCL2 and aneurysmal bone cyst: Regarding COO classification, the majority of MCD-like patients were ABC-DLBCL, whereas most EZB-like patients were GCB-DLBCL (Fig. 3c), consistent with relatively lower incidence of GCB-DLBCL in Chinese patients.14,19 BCL2/MYC double-expression was frequently observed in the MCD-like subtype (Fig. 3d).