the use of anticoagulant and antiplatelet agents has become more prevalent during the past decades. these drugs may potentially cause gastrointestinal (gi) bleeding. thus, there is an increasing need for gi endoscopy in patients who take these medications. in patients who take anticoagulant and antiplatelet agents, the appropriate conditions under which endoscopic procedures should be performed...

the patient was a 67-year-old female who presented with severe rectal bleeding since three days prior to hospital admission. she complained of mild abdominal pain. rectal examination revealed the presence of fresh blood and a clot. she had a normal upper endoscopy. a colonoscopy showed a large clot with bloody secretions up to the cecum, with no obvious origin. because of the severity of bleedi...