<prompt> Characteristic of amebiasis is: March 2005Skip lesionLongitudinal ulcerFlask shaped ulcerUlcers with raised margins  <response>: Ans. C: Flask shaped ulcer Amebic Colitis often mimics other enteric infections. Manifestations may include abdominal pain, dysentery, bloodymucoid stools, diarrhea, colonic lesionsperforations, ameboma resulting from intraluminal granulation of tissue, toxic megacolon, peritonitis, amebic appendicitis and cecitis, cutaneous amebiasis, rectovaginal amebic cutis, hemorrhage, and rectovesicular fistulas. Unlike bacterial dysentery, amebic colitis has a gradual onset that ranges from 1 to several weeks of varied symptoms, including fever in a minority of cases. It is often accompanied by weight loss. Colonic lesions may manifest as thickening of the mucosal wall, flask-shaped ulcerations, or necrosis of the intestinal wall depending on the degree of invasion. 