Transanal Endoscopic Microsurgery Combined with Laparoscopic Colectomy for Synchronous Colorectal Tumors: A Word of Caution.

Background: The incidence of malignant synchronous colorectal tumors (SCRT) is between 2% and 5%, and the association of synchronous adenomatous polyps in colon cancer has been reported to be 15%-50%. Surgical resection is the primary treatment option for SCRT not amendable to endoscopic resection. Lesions in adjacent segments are usually treated with more extensive resection; however, there is still some controversy on how to best treat synchronous lesions in separate segments, especially when the rectum is involved.

Conservative treatment of right-sided colonic diverticulitis.

Background: Diverticulosis of the right colon occurs in a small percentage of patients in Western countries. Clinical presentation of right-sided colon diverticulitis is indistinguishable from that of acute appendicitis, and the majority of patients undergo surgical intervention for presumed appendicitis. The liberal use of diagnostic radiological modalities whenever appendicitis was suspected led to correct diagnosis and also to more preoperative diagnosis of right-sided diverticulitis, which consented conservative medical therapy in cases of uncomplicated right-sided diverticulitis.