Tissue Procurement for Gastric Cancer, Gastrointestinal Stromal Tumors (GIST), Esophageal Cancer, Pancreas Cancer, Hepatocellular Cancer, Biliary Cancer, Neuroendocrine, Peritoneal Mesothelioma, Anal Cancer and Colorectal Cancer in Patients Undergoing Surgery or Biopsy

Shown exactly as written on ClinicalTrials.gov. Your oncologist is the right person to judge whether it fits your situation.

Inclusion Criteria:

* any patient diagnosed with Gastric (stomach) Cancer, Esophageal (foodpipe) Cancer, Pancreas Cancer, Liver Cancer, Biliary (gallbladder) Cancer, Gastrointestinal Stromal Tumor, Peritoneal Mesothelioma (cancer in the lining of the abdomen), Neuroendocrine (of or relating to the cells that release a hormone into the blood in response to a neural stimulus) Tumor, Anal Cancer or Colorectal Cancer cancer that requires you to undergo a surgical or diagnostic procedure.