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Impact of a family history of colorectal cancer on age at diagnosis, anatomic location, and clinical characteristics of colorectal cancer

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Abstract

Background: Among the risk factors for colorectal cancer (CRC) is a family history of colorectal cancer. Reliable evidence is needed regarding the clinical characteristics of cancer in patients with this history to determine if a change in the diagnostic approach is needed.

Aim of the Study: This study set out to determine specific clinical outcomes in patients with CRC with a family history of one first-degree relative with sporadic colorectal cancer compared to control patients with colorectal cancer but without the family history.

Methods: We designed a case-control study of colorectal cancer registry data between 1988 and 1999. Patients with a family history of one first-degree relative with colorectal cancer were compared to those without the history with regard to four characteristics: age at cancer diagnosis, anatomic location of the cancer, presence of distal adenomas with proximal cancer, and stage of disease at diagnosis.

Results: Nine hundred and twenty-one patients met the inclusion criteria. Family history was positive in 124 patients. The demography of the populations was similar, except for mean age, which was 65 yr for men with a family history and proximal cancer compared to 70 yr for their counterparts without the family history (p=0.03). The anatomic location of the cancer, presence of distal benign neoplasia when the cancer was proximal, and disease stage at diagnosis were not different between the groups.

Conclusions: Men with a family history of sporadic colorectal cancer and proximal colon cancer were younger than men without the family history and proximal colon cancer. The overall results do not indicate that a change in the diagnostic approach is needed.

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Correspondence to Williamson B. Strum MD.

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Strum, W.B. Impact of a family history of colorectal cancer on age at diagnosis, anatomic location, and clinical characteristics of colorectal cancer. Int J Gastrointest Canc 35, 121–126 (2005). https://doi.org/10.1385/IJGC:35:2:121

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