Solitary rectal ulcer (SRU) is a rare, benign disease that has a rate of 1–3.6/100000. Perineal pain, rectal bleeding, mucosal discharge accompanied by incomplete defecation, rectal prolapse, obstructive symptoms, such as constipation and obstipation, may occur as clinical findings in SRU. Different methods, ranging from medical treatment to surgery, can be applied according to the severity of the disease and clinical findings. A 36-year-old female patient, who did not have any chronic disease or previous surgical operation, was admitted to our outpatient clinic due to complaints of abdominal pain, anorexia, constipation, occasional rectal bleeding, and weight loss, which had been ongoing for about 2 months. An obstructive polypoid mass was detected in colonoscopy. Low anterior resection was performed. The pathology result was SRU. The patient was discharged on the 12th day after healing without any complication. SRU should always be considered in patients who present lower gastrointestinal system symptoms. Surgery may be preferred in patients who do not respond to medical treatment or have an obstructive lesion and suspected malignancy.