Medically reviewed by Doru Paul, MDGallbladder cancer develops in the tissues of the gallbladder—a small, pear-shaped organ ...

T1 Tumor is ≤2cm in maximum diameter and confined ... In addition, direct invasion into the duodenum is also obvious. D, duodenum; M, mass; PV, portal vein; SMV, superior mesenteric vein.

In contrast, COX-1 was not detected in GI carcinoid tumors ( Table 2 , Fig. 1e) except for one duodenal and one rectal tumor. However, this COX-1 expression was weak and was seen only in limited ...