Case report
A 51-year-old woman presented with pelvic pain, constipation, and fecal urgency complaints. She had no past medical history or any familial history.
In rectal examination she had a palpable rectal mass in distal part with mild tenderness in touching. The rectal lumen was intact with flat mucosa on colonoscopy, but posteriorly, the rectum seemed under external pressure.
The abdominopelvic computed tomography(CT) scan revealed a hypodense cystic lesion measuring 99*93 mm in the left retro-rectal region without contrast enhancement, causing a rectal deviation to the right side. (Figure 1)