Stomach feeding tube in cancer. Coloured fluoroscopic X-ray image of a section through the abdomen of a 40-year-old patient with head and neck cancer, showing a gastrostomy tube (feeding tube, black line, bottom centre) inserted into the stomach (pale oval area, centre right). This tube is used to introduce nutrition directly into the stomach of patients who cannot swallow or take food by mouth. Here, this is because the cancer has caused an obstruction.