About this procedure
Some colorectal polyps can be removed during colonoscopy using a technique selected for their size, appearance and location. Removal and pathology help establish the nature of a lesion and guide further surveillance.
What this topic means
Polyps are often found during screening before they cause symptoms. Others may be associated with bleeding or bowel changes, although these complaints have many possible causes. The appearance of a polyp alone does not settle its histological type.
When to seek medical advice
Patients may be referred after a screening finding, blood in stool, unexplained anaemia or a previous history of polyps. Symptoms should not be used to determine which resection technique is safe without endoscopic assessment.
Options and limitations
A cold snare removes selected small polyps without electrocautery; other lesions may require electrosurgical snaring or endoscopic mucosal resection (EMR). ESD is a different advanced technique. Large or suspicious lesions may need specialist planning instead of immediate removal.
Assessment and preparation
Before resection the endoscopist assesses lesion shape, size, location and any features raising concern about deeper invasion. The patient discusses medicines and bleeding risks. Retrieved tissue is assessed by histology to guide recommendations.
Treatment, risks and follow-up
The intervention is intended to remove a suitable lesion, not to treat every bowel complaint. Bleeding can occur immediately or later, and perforation is an important uncommon complication. Follow-up depends on histology, number and size of polyps, and completeness of resection.
When urgent help is needed
Heavy bleeding or clots, increasing abdominal pain, fever with deterioration, dizziness or fainting after polypectomy requires urgent assessment. Call 103 for severe symptoms and inform the emergency team about the recent endoscopic procedure.
Related information
Signs and symptoms
Patients may be referred after a screening finding, blood in stool, unexplained anaemia or a previous history of polyps. Symptoms should not be used to determine which resection technique is safe without endoscopic assessment.
Diagnosis and tests
Before resection the endoscopist assesses lesion shape, size, location and any features raising concern about deeper invasion. The patient discusses medicines and bleeding risks. Retrieved tissue is assessed by histology to guide recommendations.
Care and treatment approaches
The intervention is intended to remove a suitable lesion, not to treat every bowel complaint. Bleeding can occur immediately or later, and perforation is an important uncommon complication. Follow-up depends on histology, number and size of polyps, and completeness of resection.
When to seek urgent care
Heavy bleeding or clots, increasing abdominal pain, fever with deterioration, dizziness or fainting after polypectomy requires urgent assessment. Call 103 for severe symptoms and inform the emergency team about the recent endoscopic procedure.
Frequently asked questions
Are all colorectal polyps removed with a cold snare?
No. The safest technique depends on the polyp's size, morphology, location and suspected depth.
Is EMR the same as ESD?
No. They are different endoscopic resection approaches with distinct technical requirements and indications.
Why is histology necessary after removing a polyp?
Microscopic examination identifies the tissue type and helps determine further care and the appropriate surveillance interval.
Important information
A medical consultation is needed for diagnosis and treatment recommendations.
Self-treatment can be harmful to your health.
