Lynch syndrome is the most common inherited colon cancer syndrome. Patients with Lynch syndromedevelop a range of cancers including colorectal cancer (CRC) and carry a mutation on one of themismatched repair (MMR) genes. Although CRC usually occurs after the fourth decade in patients withLynch syndrome harboring a heterozygous MMR gene mutation, it can occur in children with Lynchsyndrome who have a compound heterozygous or homozygous MMR gene mutation. We report a caseof CRC in a 13-year-old patient with Lynch syndrome and congenital heart disease. This patient had aheterozygous mutation in MLH1 (an MMR gene), but no compound MMR gene defects, and a K-RASsomatic mutation in the cancer cells.
CITATION STYLE
Ahn, D. H., Rho, J. H., Tchah, H., & Jeon, I. S. (2016). Early onset of colorectal cancer in a 13-yearoldgirl with lynch syndrome. Korean Journal of Pediatrics, 59(1), 40–42. https://doi.org/10.3345/kjp.2016.59.1.40
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