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How frequently do you observe transient enlargement of a vestibular schwannoma after SRS?
Does this affect your subsequent imaging surveillance frequency?
Answer from: Radiation Oncologist at Academic Institution
Transient enlargement of a vestibular schwannoma is not uncommon, and it's appropriate to reassure patients. I image these patients once every 6 months until radiographic stability, and then once yearly.
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Answer from: Radiation Oncologist at Academic Institution
It is not uncommon to see transient enlargement of VS after SRS particularly for cystic tumors and data from Mayo Clinic showed that only 14% would need intervention due to continued enlargement:Pollock, PMID 16462477.If the patient is asymptomatic, I'd repeat an MRI in 6 months and would see the pa...
Answer from: Radiation Oncologist at Academic Institution
When post-radiosurgery enlargement occurs, I usually obtain MRI scans at least twice every 6 months to make sure it becomes stable or shrinks. Once stability is confirmed, I do imaging follow-up once a year.