Abstract
The anorectum is a frequent source of acute lower gastrointestinal (GI) bleeding, although in the vast majority of cases, bleeding is mild and self-limited. Possible etiologies include vascular lesions, mucosal trauma, inflammatory diseases, and neoplastic growths. Presentation ranges from spotty bleeding visible only on the toilet tissue to massive hemorrhage with orthostasis and anemia. Although the anorectum is relatively accessible, anorectal diseases are frequently misdiagnosed. One challenge is to distinguish the common trivial lesions from those that may be serious and to focus therapy and referrals as appropriate. This chapter discusses several common causes of anorectal bleeding but primarily highlights hemorrhoids, fissures, and radiation proctopathy.
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Barnett, J.L., Quallich, L.G. (2003). Radiation Proctopathy and Anorectal Diseases. In: Kim, K.E. (eds) Acute Gastrointestinal Bleeding. Clinical Gastroenterology. Humana Press, Totowa, NJ. https://doi.org/10.1007/978-1-59259-299-9_11
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