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Patients who undergo endovascular coiling need to have several serial studies ( such as MRI / MRA, CTA, or angiography ) to detect early recurrences.
If a recurrence is identified, the aneurysm may need to be retreated with either surgery or further coiling.
The risks associated with surgical clipping of previously-coiled aneurysms are very high.
Ultimately, the decision to treat with surgical clipping versus endovascular coiling should be made by a cerebrovascular team with extensive experience in both modalities.

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