From: Endoscopic and clinicopathological characteristics of colorectal T/NK cell lymphoma
 | MEITL (n = 9) | ATLL (n = 11) | Other group (n = 7) | Total (n = 27) |
---|---|---|---|---|
Histological findings | ||||
 Monomorphic medium-sized cell | 9 (100%)* | 1 (9%)* | 0 (0%) | 10 (37%) |
 Pleomorphic medium-sized cell | 0 (0%)* | 8 (73%)* | 3 (42%) | 11 (41%) |
 Monomorphic large cell | 0 (0%) | 0 (0%) | 4 (57%) | 4 (15%) |
 Pleomorphic large cell | 0 (0%) | 2 (18%) | 0 (0%) | 2 (7%) |
Increased atypical IELs in tumors | 7/8 (88%) | 6/10 (60%) | 0/5 (0%) | 13/23 (57%) |
Lymphocytic proctocolitis | 5 (56%)** | 1 (9%)** | 0 (0%) | 6 (22%) |
Tumor cell markers | ||||
 CD3 | 9 (100%) | 11 (100%) | 5 (71%) | 25 (93%) |
 CD4 | 1 (11%)* | 9 (82%)* | 3 (42%) | 13 (48%) |
 CD8 | 9 (100%)* | 2 (18%)* | 2 (29%) | 13 (48%) |
 CD25 | 0/8 (0%)* | 11 (100%)* | 2/6 (33%) | 13/25 (52%) |
 CD56 | 8 (89%)* | 1 (9%)* | 1 (14%) | 10 (37%) |
 CD30 | 0/8 (0%) | 2/9 (22%) | 4 (57%) | 6/24 (25%) |
 CD194 (CCR4) | 0/7 (0%)* | 9/9 (100%)* | 0 (0%) | 9/23 (39%) |
 CD103 | 6 (67%) | 4 (36%) | 1 (14%) | 11 (41%) |
 TIA-1 | 9 (100%)* | 0/8 (0%)* | 6 (86%) | 15/24 (63%) |
EBERs | 0 (0%) | 0 (0%) | 4 (57%) | 4 (15%) |