Fig. 3
From: What is hiding in the hindgut sac? Looking beyond rectal carcinoma
A 65-year-old woman presenting with intermittent diarrhoea, rectal bleeding and difficulty in defecation for 1 month. Laboratory data revealed hypokalaemia. a Coronal contrast CT reveals a lobulated solid mass (arrow) projecting into the lumen of the rectum. b Coronal T2-weighted MRI reveals the frond-like morphology of the lesion (arrow). c Coronal contrast MRI depicts a central vascular stalk (arrow) and the cauliflower or frond-like morphology (arrowhead), classical for villous adenoma