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5165 x 3591 pixels
43.7 x 30.5 cm ⏐ 17.2 x 12.0 in (300dpi)
DR. E. WALKER / SCIENCE PHOTO LIBRARY DR. E. WALKER / SCIENCE PHOTO LIBRARY
Stomach cancer. Specimen of human stomach tissue showing a malignant tumour, known also as gastric adenocarcinoma. At right the tumour is seen as a raised kidney-shaped area. Normal stomach lining is at left; the oesophagus is at upper right. The scale reference is in centimetres. Adenocarcinoma is a malignant tumour arising from the epithelium. Stomach cancer is fast growing and may spread beyond the stomach lining. Barium X-ray, biopsy & gastroscopy are methods of diagnosis. Symptoms include nausea, vomiting and weight loss, similar to those suffered in peptic ulcer. Early surgical removal (gastrectomy) offers a cure; radiotherapy and anticancer drugs may be used.
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