<prompt> Bleeding per rectum is present in all, except ?Meckels diveiculumSigmoid volvulusCarcinoma rectumUlcerative colitis  <response>: Ans. is b i.e., Sigmoid Volvulus Volvulus does not cause bleeding Causes of lower G.I. bleeding A Common B Less common C Rare Angiodysplasia Neoplasia --- Carcinoma, polyps Meckels diveiculum Diveiculitis Colitis -- Radiation, Ischaemic, Ulcerative Intussusception Anorectal disease Infective -- Enteric fever, Amoebic ulcer, T.B. Hemorrhoids, Anal fissure HIV related Gonorrhoea, C.M.V. 