- Bulky disease at study entry according to the GELF criteria: Nodal or extranodal single mass > 7cm in its greatest diameter; systemic B-symptoms; increased LDH and beta 2 microglobulinemia (> 3mg/L); involvement of at least 3 nodal sites, each with a diameter of greater than 3 cm; splenic enlargement with margin below the umbilical line or cranio caudal diameter of greater than 20 cm; compression syndrome (ureteral, orbital, gastrointestinal), or pleural or peritoneal serous effusion.