Choroidal tubular adenomas tend to occur in the large intestine, especially in the descending and sigmoid colon. Minimally invasive resection by colonoscopy, i.e. EMR or ESD, is recommended in this case. In the case of tubular adenomas smaller than 1 cm, EMR can be performed, that is, submucosal injection of saline followed by mucosal elevation and electrodesection with a trap and closure of the wound with a titanium clip. If the adenoma is lateralized and is more than 2 cm, ESD resection is required, which means that the tumor is peeled off in stages at 0.5 cm along the edge of the tumor and then the wound is closed with a titanium clip. Basically, this treatment is able to achieve clinical cure, and it is less invasive and faster to recover. For large tubular adenomas larger than 3 cm or more, or close to 5 cm, surgical treatment is required.