(Plate XIX/5)
  • Peter Otto
  • Klaus Ewe


When the patient states that blood has been passed in the stool, a rectoscopic clarification of the source for the bleeding is necessary. Melena indicates a bleeding site in the upper gastrointestinal tract above the cecum, while bleeding from lower down leads to the passage of fresh or coagulated blood. It is also possible that such bleeding may arise from the hemorrhoidal area (e.g., thermometer injuries) and having flowed cephalad while the patient has been lying down and been acted upon by colon bacteria appears only the next day as a tarry stool.


Public Health Gastrointestinal Tract Methylene Blue Foreign Body Intravenous Injection 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1979

Authors and Affiliations

  • Peter Otto
    • 1
  • Klaus Ewe
    • 2
  1. 1.Medizinische AbteilungKreiskrankenhausGroßburgwedelGermany
  2. 2.I. Med. Klinik und Poliklinik der Universität MainzMainzGermany

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