Table 3 Location of CD117-positive positive mesenchymal tumors within the gastrointestinal tract, stratified by p16 and L1 immunostaining
From: Diagnostic and prognostic markers for gastrointestinal stromal tumors in Norway
p16- positive tumors (%) | p16- negative tumors (%) | L1- positive tumors (%) | L1- negative tumors (%) | |
|---|---|---|---|---|
Localization of primary tumor | ||||
Esophagus | 1 (1) | 0 | 1 (1) | 0 |
Stomach | 74 (41) | 138 (55) | 166 (65) | 45 (25) |
Small bowel | 74 (41) | 74 (29) | 48 (19) | 99 (56) |
Colon | 4 (2) | 6 (2) | 4 (2) | 6 (3) |
Rectum | 9 (5) | 14 (6) | 20 (7) | 3 (2) |
Omentum/mesentery | 2 (1) | 5 (2) | 7 (4) | |
Other locations/unknown | 16 (9) | 17 (6) | 16 (6) | 17 (10) |
Number of patients | 180 | 254 | 255 | 177 |
