Physicians perform more than two million endoscopies a year on the small intestine, looking for cancers and other ailments by inserting fiber-optic tubes via the throat or rectum.
Physicians perform more than two million endoscopies a year on the small intestine, looking for cancers and other ailments by inserting fiber-optic tubes via the throat or rectum.
每年内科医生要在狭窄的小肠上做200多万次的内窥镜检查,通过从喉部或直肠处插入的纤维视觉管寻找各种癌变和其他疾病的迹象。