###Human: Is it possible to check the problems in stomach with endoscopy alone? ###Assistant: Hi. You need to get an endoscopy for your current symptoms. If it is negative, we may go for other tests. A colonoscopy is not recommended for difficulty in swallowing. I think it was suggested in view of age. Endoscopy can show esophagus and stomach. To visualize colon we have to go from the bottom, that is, colonoscopy itself.