Common variable hypogammaglobulinaemia |
Radiation enteritis |
Laxative abuse |
Backwash ileitis during ulcerative colitis |
Crohn’s disease |
Alpha-chain disease |
Graft versus host disease |
Atrophy in the reservoir after ileoanal anastomosis |
Enterocystoplasty |
Primary ileal villous atrophy (PIVA) |