| Comment | IHC | H & E | Case No | ||
| CD20:CD3 | CD3 | CD20 | |||
| Malignant-infiltration (B-NHL), occult infiltration |
| − | + Patchy & interstitial | Not infiltrated | 1 |
| Reactive | Normal ratio | + Interstitial | + Interstitial | 2 | |
| Reactive patch | Normal ratio | + Patchy | + Patchy | 3 | |
| Malignant-infiltration (B-NHL), occult infiltration | increased ratio | + Patchy
| + Patchy & interstitial | 4 | |
| Malignant-infiltration (B-NHL), occult infiltration |
| − | + Interstitial | 5 | |