polyps

Single or multiple

Sessile/ pedunculated

Best seen with DCBE

Often impossible to exclude malignancyBut size more than 2cm short

thick stalk irregular surface rapid rate

of growth

polypsAdenomatous benign e.g. familial

polyposis undergo malignant

change

Villous adenoma sessile large

high incidence of malignant change

Polypoidal carcinoma

Juvenile polyp children developmental

Inflammatory polyp

Colonic carcinoma

BE LT annular narrowing-apple core

RT fungating FD

Multiple carcinoma should be excluded

Elderly-BE alternative is CT with rectal contrast/air

Wall thickening or irregular narrowing

CT/MRI in rectal carcinoma

Main role local invasion postoperative

recurrence

Invasion of organssacrumpelvic side wallsLNsliver & para-aortic LNs