Abstract
Brain metastases from bladder cancer are rare, with a poor prognosis. There is no standard treatment for bladder cancer with brain metastases; thus, palliative therapy is generally provided. We report a case of abscopal effect in a single brain metastasis from bladder cancer in a patient treated with focal stereotactic radiotherapy (total dose = 52 Gy, administered in eight fractions) with immune checkpoint blockade therapy for lung metastases, who achieved long-term disease-free survival (> 4 years). To our knowledge, although there have been some reports on abscopal effects in bladder cancer, there are no previous reports on patients with brain metastases. To date, the brain metastasis, which showed an “abscopal effect,” continues to maintain complete regression.
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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by Yasuhiro Kunihiro, Kenta Ohmatsu and Miki Kawanishi, Shigehiko Kuribayashi and Kumiko Karasawa. The first draft of the manuscript was written by Sawa Kono and Yaichiro Hashimoto. All authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Kono, S., Hashimoto, Y., Shirai, Y. et al. A long-term survival case of bladder cancer with distant metastases: abscopal effect of brain metastases after stereotactic radiotherapy with immune checkpoint blockade therapy to lung metastases. Int Canc Conf J 12, 205–209 (2023). https://doi.org/10.1007/s13691-023-00606-w
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DOI: https://doi.org/10.1007/s13691-023-00606-w