Triple metachronous colon cancer

Area of Science:

• Gastroenterology
• Oncology
• Cancer Surveillance

Background:

• Early-stage sigmoid colon cancer diagnosis in a 72-year-old male.
• Initial cancer was symptomatic, with subsequent lesions being asymptomatic.

Observation:

• Development of two additional, separate, node-negative early-stage colon cancers over nearly 14 years.
• First new cancer detected in the descending colon 7 years post-resection.
• Second new cancer detected in the cecum almost 14 years post-resection.

Findings:

• All subsequent neoplastic diseases, including malignant cancers, were asymptomatic.
• The emergence of multiple primary cancers is strongly associated with the colonoscopic surveillance regimen.

Implications:

• Colonoscopic surveillance is crucial for detecting multiple primary colon cancers.
• Effective early detection of asymptomatic neoplastic disease through regular colonoscopies.
• Highlights the potential for developing multiple primary colon cancers in patients with a history of early-stage disease.