STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Stomach cancer. Light micrograph of a section through an adenocarcinoma of the stomach. Tumour cells are brown, connective tissue is blue. Adenocarcinomas are cancers that arise from glandular tissue in the lining of an organ. This is the most common type of stomach cancer. Its main risk factors are a diet high in salt, infection with the bacteria Helicobacter pylori and smoking. Symptoms include indigestion, pain, difficulty swallowing and nausea or vomiting. Treatment is with surgery to remove the tumour, combined with chemotherapy. Magnification: x60 when printed at 10 centimetres wide.
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