Which of the following is the finding in lymphoid tissues in individual with common variable hypogammaglobulinemia

Ref Robbins 8/e p233,9/e p241 Making a definitive diagnosis of primary hypogammaglobulinemia There is no single diagnostic test; CVID is a diagnosis of exclusion. Laboratory testing shows hypogammaglobulinemia (low IgG plus either low IgA or IgM, or both) and low specific antimicrobial antibody responses despite immunization.