Famillal adenomatous polyposis, an Inherited condition, can lead to colon cancer If left untreated. Patients seeking treatment for symptoms of this disorder are often found to have cancer already. Because surgical treatment In symptom free persons with familial adenomatous polyposis greatly reduces their future risk of cancer, presymptomatic Identification of the disorder can save lives. Because the disorder Is Inherited, knowledge of Its familial pattern can help nurses recommend candidates for screening. A case study of one family demonstrates the value of genetic analysis and the role nurses can play.