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Tumor Progression02:07

Tumor Progression

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Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
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Colorectal Neoplasia in CDH1 Pathogenic Variant Carriers: A Multicenter Analysis.

Peter P Stanich1, Dareen Elgindi2, Elena Stoffel3

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This summary is machine-generated.

Germline CDH1 variants do not increase colorectal neoplasia risk. Colorectal cancer screening is still recommended for CDH1 carriers, even after gastrectomy.

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Area of Science:

  • Gastroenterology
  • Oncology
  • Genetics

Background:

  • Germline CDH1 variants are linked to diffuse gastric and lobular breast cancers.
  • The association between CDH1 variants and colorectal neoplasia is not well-established.

Purpose of the Study:

  • To investigate the risk of colorectal neoplasia in individuals with germline CDH1 pathogenic/likely pathogenic variants.

Main Methods:

  • Retrospective analysis of colonoscopy outcomes.
  • Inclusion of patients with germline CDH1 pathogenic/likely pathogenic variants.

Main Results:

  • 35.3% of patients had adenomatous polyps, with 10.6% having advanced adenomas.
  • No colorectal cancers were detected during index or subsequent colonoscopies.
  • Colorectal neoplasia rates were similar to the general population.

Conclusions:

  • Individuals with CDH1 variants do not appear to have an elevated risk of colorectal neoplasia.
  • Colorectal cancer screening remains crucial for CDH1 carriers, considering potential challenges post-gastrectomy.