MS-1513

A healthy 56-year-old woman attends her flexible sigmoidoscopy as part of the UK’s national screening program. While performing the procedure, the surgeon observes and biopsies several polyps for further analysis. Additionally, the patient has multiple hyperpigmented macules on her lips.

During her follow-up visit, the patient is informed that the type of polyp found in her bowel increases her risk of developing cancers in other parts of her body.

What is the name of the benign colorectal tumor that the patient has?