<prompt> The most common site for amoebiasis is:Sigmoid colonTransverse colonCaecumLiver  <response>: Amoebiasis: - MC site involved is caecum ascending colon. - Caused by Entamoeba histolytica. - Dysentery develops when amoeba attach to colonic epithelium, induce apoptosis, invade crypts burrow laterally into lamina propria. - This recruits neutrophils, causes tissue damage, create a flask-shaped ulcer with narrow neck broad base. 