I have choroid plexus AVM in the left ventricle. Will surgery cause weakness on the left side?

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I need to see the angiogram images to comment in detail. Anyways, I have listed the essential points : Your weakness will depend on the extent of the damage during surgery. If some blood vessels are damaged, which supply the bundle of nerves supplying the limbs, you can have a weakness. If it is damaged completely, you will have a severe weakness. Usually, that does not happen. If your weakness is partial, it will recover in six weeks. Provided you should do physiotherapy regularly. Apart from weakness, you may have a minimal visual impairment in the upper outer quadrant of your visual field. But this will not trouble you in your daily life. Apart from these two, there are no other major complications. Minor ones would be nonhealing wounds, CSF (cerebrospinal fluid) leak, development of hydrocephalus, etc.