<prompt> A patient presents with lower gastrointestinal bleed. Sigmoidoscopy shows ulcers in the sigmoid. Biopsy from this area shows flask-shaped ulcers. Which of the following is the most appropriate treatment -Intravenous ceftriaxoneIntravenous metronidazoleIntravenous steroids and sulphasalazineHydrocortisone enemas  <response>: MC site of amebic colitis: Cecum and ascending colon. Flask shaped ulcers on colonoscopy confirms the diagnosis of amebic colitis. Asymptomatic carrier: Luminal agents Iodoquinol, paromomycin. Acute colitis: Metronidazole and luminal agents. Amebic liver abscess: Metronidazole, tinidazole and luminal agents. 