Evaluation of gastrointestinal malignant neoplasia.
D005770:Gastrointestinal Neoplasms / Q000175:diagnosis* / Q000628:therapy*; D006801:Humans; D008113:Liver Neoplasms / Q000175:diagnosis; D008297:Male; D008875:Middle Aged; D010190:Pancreatic Neoplasms / Q000175:diagnosis