<prompt> Answer this question truthfullyWhat is the screening procedure for hereditary nonpolyposis colorectal cancer?  <response>: <reason> According to Netherlands Surveillance Protocol for Carriers of an MMR-gene mutation, there is sufficient evidence to recommend routine screening for HNPCC-related cancers. Recommended annual screening for patients with hereditary nonpolyposis colorectal cancer age 25 onwards or beginning no later than 5 years before the lowest age of onset in family should include: Physical examination Abdominal ultrasound Colonoscopy Upper gastrointestinal endoscopy age 35 onwards Gynecological examination including transvaginal ultrasound Endometrial pipelle biopsy age 35 onwards Skin surveillance Urinalysis 