Solitary rectal ulcer syndrome (SRUS) is a chronic anorectal disorder of unknown etiology, most commonly observed in young adults. The diagnosis is established through a combination of clinical, endoscopic, and histopathological findings. Its polypoid appearance, which may mimic malignancy, often leads to misdiagnosis. Herein, we present the case of a 64-year-old woman with a history of constipation and digital evacuation, who was found to have a polypoid rectal lesion resembling malignancy, which was subsequently diagnosed as SRUS.