Causes of PR bleeding
Fresh PR bleed: Diverticulitis Benign and malignant tumour Haemarrhoids anal fissure Ulcerative colitis Angiodysplasia Trauma Coagulopathy massive upper GI bleed Non PR bleeding - mensturation, haematuria. Malaena: Gastric ulcer Peptic ulcer Mallory weiss tear Gastritis Benign and malignant tumour Oesophageal varicies Merkel's diverticulum Dark stools without blood - iron tablets References: Ellis H, Calne R, Watson C, Lecture notes - General Surgery, 11th Ed., Oxford, Blackwell Publishing, 2006 SurgWiki, Haematemasis and Malaena, [online] available from: http://www.surgwiki.com/wiki/Haematemesis_and_melaena [accessed:20/10/2014]