I had gbs , acute pancreatitis and some sort of ibd all within last 1.5 years. Biopsy of colon: The lymphoid aggregates in biopsies I to V show an admixture of CD20 positive B cells and CD3, CD5 and CD7 positive T cells with a mild predominance of T cells with low proliferation index. The lymphoid follicles show prominent intact germinal centres positive for bcl6, CD20 and CD10 with high proliferation index with occasional follicles showing disruption by the marginal zone cells and T cells. The lymphoid cells are negative for Cyclin D1. Impression Review of slides  [H &E and IHC slides] shows - - Evidence of active colitis with aphthous ulcers, cryptitis and multiple crypt abscess and occasional small histiocytic aggregates. - Hypertrophied lymphoid tissue with follicle formation and prominent mantle / marginal zones. - Nodular lymphoid aggregates composed of admixture of T and B cells with mild predominance of T cells, evidence of epitheliotropism and low proliferation index.