Endoscopic image of adenocarcinoma of duodenum seen in the post-bulbar duodenum. Risk factors for<unk>  include: *Crohn's disease *Celiac disease *Radiation exposure *Hereditary gastrointestinal cancer syndromes: familial adenomatous polyposis, hereditary nonpolyposis colorectal cancer, Peutz–Jeghers syndrome *Males are 25% more likely to develop the disease Benign tumours and conditions that may be mistaken for cancer of the<unk>  bowel: *Hamartoma *Tuberculosis
Small intestine cancer
Stomach cancer
Duodenal cancer
Stomach disease
Pancreatic cancer
Gastrointestinal cancer
Anal cancer
Acid peptic diseases