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Gastrointestinal cancer refers to malignant conditions of the gastrointestinal tract (GI tract) and accessory organs of digestion, including the esophagus, stomach, biliary system, pancreas, small intestine, large intestine, rectum and anus. The symptoms relate to the organ affected and can include obstruction (leading to difficulty swallowing ...
Gastrinoma in the early stages will have signs and symptoms of indigestion [3] or similar to irritable bowel disease (IBD) such as: Hypergastrinemia [3] Refractory or recurrent peptic ulcers involving duodenum [3] Chronic diarrhea [7] [2] [3] Generalized cancer symptoms; Abdominal pain [3] Gastrointestinal bleeding [3] Obstruction of intestine [8]
Cancer of the stomach is difficult to cure unless it is found at an early stage (before it has begun to spread). Unfortunately, because early stomach cancer causes few symptoms, the disease is usually advanced when the diagnosis is made. [80] Treatment for stomach cancer may include surgery, [81] chemotherapy, [13] or radiation therapy. [82]
Blood in stool looks different depending on how early it enters the digestive tract—and thus how much digestive action it has been exposed to—and how much there is. The term can refer either to melena, with a black appearance, typically originating from upper gastrointestinal bleeding; or to hematochezia, with a red color, typically originating from lower gastrointestinal bleeding. [6]
The most common upper gastrointestinal inflammation is chronic gastritis, which may in rare cases develop to gastric cancer, and duodenal inflammation resembling celiac disease. The inflammation affecting the lower GI tract is heterogenous and often characterized as an unspecific colitis.
Owing to the causal relationship between H. pylori infection and gastric MALT lymphoma, identification of the infection is imperative. Histological examination of GI biopsies yields a sensitivity of 95% with five biopsies, [7] but these should be from sites uninvolved by lymphoma and the identification of the organism may be compromised by areas of extensive intestinal metaplasia.
Primary gastric lymphoma (lymphoma that originates in the stomach itself) [1] is an uncommon condition, accounting for less than 15% of gastric malignancies and about 2% of all lymphomas.
Fecal occult blood testing (FOBT), as its name implies, aims to detect subtle blood loss in the gastrointestinal tract, anywhere from the mouth to the colon.Positive tests ("positive stool") may result from either upper gastrointestinal bleeding or lower gastrointestinal bleeding and warrant further investigation for peptic ulcers or a malignancy (such as colorectal cancer or gastric cancer).