Hereditary nonpolyposis colorectal cancer
Hereditary nonpolyposis colorectal cancer (HNPCC) is a hereditary predisposition to colon cancer.
| Hereditary nonpolyposis colorectal cancer | |
|---|---|
| Micrograph showing tumor-infiltrating lymphocytes (in a colorectal cancer), a finding associated with MSI-H tumours, as may be seen in Lynch syndrome. H&E stain. | |
| Specialty | Oncology |
HNPCC includes (and was once synonymous with) Lynch syndrome, an autosomal dominant genetic condition that is associated with a high risk of colon cancer, endometrial cancer (second most common), ovary, stomach, small intestine, hepatobiliary tract, upper urinary tract, brain, and skin. The increased risk for these cancers is due to inherited genetic mutations that impair DNA mismatch repair. It is a type of cancer syndrome.
Other HNPCC conditions include Lynch-like syndrome, polymerase proofreading-associated polyposis and familial colorectal cancer type X.
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