Stomach disease utilizes a small flexible camera. The procedure does require intravenous sedation and takes about 30–45 minutes; the endoscope is inserted via the mouth and can visualize the entire swallowing tube, stomach and duodenum. The procedure also allows the physician to obtain biopsy samples. In many cases of bleeding, the surgeon can use the endoscope to treat the source of bleeding with laser, clips or other injectable drugs. Other radiological studies frequently used to assess patients with chronic stomach problems include a barium swallow, where a dye is consumed and pictures of the esophagus and stomach are obtained every few minutes.
Beyond the Dragon's Mouth Also included is his piece about Ugandan Asians relocating to a hostile Britain. Beyond the Dragon's Mouth Beyond the Dragon's Mouth: Stories and Pieces is a collection of Shiva Naipaul's journalism and stories prefaced by a short memoir, published by Hamish Hamilton in 1984. The first part consists of a short memoir in which Naipaul writes about his childhood in Trinidad, the Dragon's Mouth in the title referring to the curious shape of the harbour through which he would set sail for Britain and Oxford University. The second part consists of his short stories, such as "The Man of Mystery",