Is it okay to do a lumbar epidural steroid injection in a patient with a schwannoma or neurofibroma?

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I have a 51 year old female with chronic low back pain with radicular pain down the left lower extremity. Her MRI within the last few months shows some non-specific degenerative changes except for a T2 signal in the right lateral recess of L3-L4 which is likely a schwannoma or neurofibroma. Interestingly, note the pain is mostly left but the lesion is on the right. Her pain appears to be coming from other degenerative changes.

The lesion has been stable for years and she elected a while ago to not undergo surgery. To treat the left sided pain I was thinking of an epidural steroid injection (possibly via the transforaminal approach on the left). But I’m not sure if the lesion is a contraindication?

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I actually found some info myself: This case report [] suggests transient neurological symptoms occurred in a similar situation but with a high volume of injectate. They postulate it’s from volume/mass effect, but it's hard to know for sure. I didn't see any good large studies.

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