C 20. ICD - 9 153.0 - 154.1 ICD-O: M 8140/3 (95% of cases) OMIM 114500 DiseasesDB 2975 MedlinePlus 000262 eMedicine med/413   med/1994 ped/3037 Gross appearance of a colectomy specimen containing two adenomatous polyps (the brownish oval tumors above the labels, attached to the normal beige lining by a stalk)