Rationale: Colonic lipomas are uncommon benign submucosal adipose tumors that are usually asymptomatic. In principle, large lipomas can cause symptoms that require further treatment. Here, we report a case of prolapsed giant rectal lipoma and transanal mass resection.
Patient concerns: A 65-year-old male developed rectal mass prolapse with bloody stool for 1 day.
Diagnoses: The pathological findings were rectal lipoma.
Intervention: After resection of the anal tumor, the patient postoperative symptoms quickly disappeared.
Outcomes: No recurrence of the condition was observed after 6 months of follow-up after surgery.
Lessons: It is safe and feasible for us to perform transanal mass resection for giant rectal lipomas that protrude outside the anus.
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