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Endoscopy. Doctors performing an endoscopy (gastroscopy) examination of a woman's stomach and taking a sample of tissue (a biopsy). The endoscope has been inserted through the pati- ent's mouth and fed down through her throat. The image obtained by the endoscope is on the screen at upper left. The doctor with the syringe-like implement is controlling a surgical instrument on the end of a fibre which has been fed through the endoscope cable. An endoscope is a flexible fibre optic cable through which internal cavities can be viewed. This technique is routinely used in the diagnosis of cancer and ulcers.
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