Familial Cancer

, Volume 9, Issue 4, pp 563–570

Frequency of extracolonic tumors in Brazilian families with Lynch syndrome: analysis of a hereditary colorectal cancer institutional registry

Authors

    • Research Center of the AC Camargo Hospital, Fundação Antônio Prudente
  • Ligia Petrolini de Oliveira
    • Research Center of the AC Camargo Hospital, Fundação Antônio Prudente
  • Érika Monteiro Santos
    • Hereditary Colorectal Cancer Registry of the A.C. Camargo Hospital, Fundação Antônio Prudente
  • Wilson Toshihiko Nakagawa
    • Hereditary Colorectal Cancer Registry of the A.C. Camargo Hospital, Fundação Antônio Prudente
  • Samuel Aguiar Junior
    • Hereditary Colorectal Cancer Registry of the A.C. Camargo Hospital, Fundação Antônio Prudente
  • Mev Dominguez Valentin
    • Research Center of the AC Camargo Hospital, Fundação Antônio Prudente
  • Benedito Mauro Rossi
    • Hereditary Colorectal Cancer Registry of the A.C. Camargo Hospital, Fundação Antônio Prudente
  • Fábio de Oliveira Ferreira
    • Hereditary Colorectal Cancer Registry of the A.C. Camargo Hospital, Fundação Antônio Prudente
Article

DOI: 10.1007/s10689-010-9373-2

Cite this article as:
da Silva, F.C., de Oliveira, L.P., Santos, É.M. et al. Familial Cancer (2010) 9: 563. doi:10.1007/s10689-010-9373-2

Abstract

Lynch syndrome (LS) is caused by inherited germline mutations in mismatch repair (MMR) genes. It is one of the commonest forms of inherited predisposition to colorectal cancer (CRC), accounting for 2–5% of all CRC. LS is characterized by early age of onset, with a tendency for multiplicity and an increased risk for extra-colonic tumors at particular sites. In this study we have evaluated the frequency of extra-colonic tumors in 60 unrelated LS families fulfilling the Amsterdam criteria (ACI. ACII) from the Oncotree database of the Hereditary Colorectal Cancer Registry of the AC Camargo Hospital. All families’ pedigree was extensively analyzed, varying from 2 to 6 generations with a total of 2,095 individuals evaluated. As expected, colorectal cancer was the most frequent tumor in the families (334 cases). We found 200 extracolonic tumors among all individuals with a higher ratio in women (123 cases) than men (77 cases). By far, breast cancer (32 cases) was the most frequent extracolonic manifestation in women followed by endometrial (20 cases) and uterine cervix cancer (20 cases). For man, prostate (16 cases) and stomach (12 cases) cancer were the most frequent extracolonic tumors. It is well know that establishing the diagnosis is challenging and requires knowledge and surveillance. Thus, recognition of individuals and families with hereditary predisposition to cancer according to clinical and molecular features, combined with intensive surveillance and management programs, can contribute substantially to improve results related to the diagnosis and characterization of LS.

Keywords

CRCExtracolonic tumorsFamilial cancerHNPCCLS

Abbreviations

HNPCC

Hereditary non-polyposis colorectal cancer

CRC

Colorectal cancer

MMR

Mismatch repair gene

LS

Lynch syndrome

ACI

Amsterdam criteria I

ACII

Amsterdam criteria II

Copyright information

© Springer Science+Business Media B.V. 2010