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Is prior whole brain radiation and/or spinal radiation within last 6 months a contraindication for intrathecal methotrexate treatment in with leptomeningeal disease?

If not, what interval between the patient's last RT and IT chemo would you prefer?
2 Answers
Mednet Member
Mednet Member
Radiation Oncology · Icahn School of Medicine at Mount Sinai
Answered on

We treated a few patients with leptomeningeal disease with palliative RT in conjunction with IT MTX in our institution, with RT delivered safely within 1 week of IT MTX without any apparent increase of clinically significant toxicities. There are no high-quality data to suggest that palliative RT is...

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Mednet Member
Mednet MemberInvited Expert
Radiation Oncology · Varian Medical Systems/Allegheny health network
Answered on

Prior whole brain RT is not a contraindication to IT for leptomeningeal disease and can be done anytime it is required for palliation.

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