Many techniques have been described to remove foreign bodies from the stomach and esophagus. Usually the esophagus is protected with an overtube (a plastic tube of varying length), through which the gastroscope and retrieved objects are passed.Once the foreign body has been identified with the gastroscope, various devices can be passed through the gastroscope to grasp or manipulate the foreign body. Devices used include forceps, which come in varying shapes, sizes and grips, snares, and oval loops that can be retracted from outside the gastroscope to lasso objects, as well as Roth baskets (mesh nets that can be closed to trap small objects), and  magnets placed at the end of the scope or at the end of orogastric tubes. Some techniques have been described that use foley catheters to trap objects, or use two snares to orient foreign bodies. Alternative methods
In veterinary medicine or when there is no endoscope available to extract foreign bodies economically without operation very often the Hartmann alligator forceps is used

See also
Bezoar
Schatzki ring

References
External links
Esophageal Coin MedPix Topic
Research
HIV
Ingenol mebutate has also been found to be useful for reactivating latent HIV virus in cells taken from individuals who have tested negative for signs of the disease following extended courses of anti-retroviral drugs, raising the possibility that this drug may be used to expose the last traces of virus, and thus potentially provide a permanent cure for HIV infection. Research is ongoing to determine whether the effects observed in vitro are also seen in animal models, with a view to eventual human trials for this application. Tattoo removal
A placebo-controlled study on hairless mice found that 0.1% ingenol mebutate gel was able to remove two-week-old tattoos consistently. It was observed that the microspheres within the skin containing the dye would exude into the scab intact and slough off as the skin healed about 20 days after treatment began. This mechanism appears to be independent of ink color, unlike laser tattoo removal, which is less effective for certain colors. There are no reports of human trials having been conducted. Skin cancer risk
Health Canada assessed twelve studies published in scientific and medical literature in order to determine the link between the use of ingenol mebutate and skin cancer. Health Canadas review found that six of the twelve studies had evidence of skin cancer with the use of ingenol mebutate. The European Medicines Agency (EMA) has also reviewed this safety issue. In April 2020, it concluded that ingenol mebutate may increase the risk of skin cancer and that its risks outweigh its benefits.