If a patient suspected of having colon ischemia undergoes a careful colonoscopy within 48 hours of symptom onset, typical findings that might be noted include which of the following?
1-A single line of erythema with ulceration oriented along its longitudinal axis of the colon (colon single-stripe sign)
2-Thumbprinting
3-Extensive rectal involvement with a single deep ulceration
4-Stricture formation in the sigmoid colon
Thumbprinting is a finding seen on a barium enema or plain film. It corresponds to the hemorrhagic nodules seen at colonoscopy. The colon single-stripe sign has a 75% histopathologic yield in making the diagnosis of ischemic injury and signifies a milder course than that of a circumferential ulcer. Rectal sparing is typical of ischemic injury, and stricture formation is usually a late finding.
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1-A single line of erythema with ulceration oriented along its longitudinal axis of the colon (colon single-stripe sign)
2-Thumbprinting
3-Extensive rectal involvement with a single deep ulceration
4-Stricture formation in the sigmoid colon
Thumbprinting is a finding seen on a barium enema or plain film. It corresponds to the hemorrhagic nodules seen at colonoscopy. The colon single-stripe sign has a 75% histopathologic yield in making the diagnosis of ischemic injury and signifies a milder course than that of a circumferential ulcer. Rectal sparing is typical of ischemic injury, and stricture formation is usually a late finding.
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