Rectal duplication cyst presenting with change in bowel habits and rectal bleeding: A case report and literature review

We present a rare case of rectal duplication cyst (RDC) in an adult patient who presented with chronic fluctuating bowel habits and rectal bleeding. A faecal immunochemical test (FIT) and a faecal Calprotectin level showed negative results, and no previous abdomen-pelvis CT scan or MRI was identified. A Colonoscopy was performed, showing a benign rectal lesion causing colonic intraluminal compression leading to rectal ulceration and prolapse, and solitary rectal ulcer syndrome was suspected. A Transanal Minimally Invasive surgery (TAMIS) was performed to excise the lesion, with histopathology findings consistent with a rectal duplication cyst. The patient had no intraoperative complications and made an uneventful recovery. A systematic literature review showed 30 30 adult Rectal supplication cyst case reports. In conclusion, The most common presentation of RDC is anal pain and rectal bleeding. The diagnosis of RDC is challenging, and it requires Surgical resection to confirm the diagnosis.