Answers are grounded in this paper and cite their sources.
Colonoscopy should be performed first in most patients presenting with acute lower GI bleeding. Such bleeding may be treated endoscopically (first-line approach when possible), by angiographic embolization, or with surgery when bleeding is in the colon but cannot be localized.
No takes yet. Share an insight, caveat, or question.
Gralnek et al. (2017) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: