To obtain a small piece of tissue from the stomach, which tool is used?

The tool specifically designed for obtaining a small piece of tissue from the stomach is the biopsy forceps. Biopsy forceps are specialized instruments that can grasp and cut tissue samples during endoscopic procedures. They are typically used in conjunction with an endoscope, allowing the physician to visualize the targeted area of the stomach while obtaining a sample.

This process is crucial for diagnostic purposes, such as identifying infections, inflammation, or cancerous changes in the stomach lining. The design of biopsy forceps facilitates precise collection of tissue, ensuring adequate sample size for histological examination, as opposed to other tools, which are not intended for this specific purpose.

In contrast, forceps raiser is not a standard instrument for tissue collection, a light guide is used to illuminate the endoscopic field but does not interact with tissue, and a suction device is meant for removing fluids or debris rather than collecting tissue. Thus, biopsy forceps are the go-to tool for safely and efficiently obtaining tissue samples from the stomach during flexible endoscopy.