Melanosis of the colon and rectum

Colorectal melanosis (MC) refers to a mucopigmentation lesion of macrophages in the intrinsic membrane of the colorectum that contains lipofuscinlike substances. With the improvement of people's living standards, the incidence of melanosis of rectum and rectum has increased. The disease is reported less domestically. The etiology and pathogenesis of colorectal melanosis is still unclear. Patients with this disease may have electrolyte disorders, and the incidence of colorectal cancer and colorectal adenomatous polyps is high in patients with this disease. A few patients may also have pseudointestinal Stenosis and misoperation of laparotomy.