Multifocal rectal carcinoid tumor: a case report and literature review

Multifocal rectal carcinoid tumors are extremely rare, with an incidence of 2% to 4.5% of all rectal carcinoid tumors. Over the past 35 years, the age-adjusted incidence of rectal carcinoids has increased 800–1,000%, likely due to the increased use and availability of screening flexible sigmoidoscopies and colonoscopies. We report the case of a 55-year-old male who presented with multifocal rectal carcinoid tumor despite multiple colonoscopic resections, eventually necessitating lower anterior resection.