- 28% of the people had evidence of blood vessel issues in the brain—17% had narrowing vessels and 13% had bulging vessels that were present at the time of their bone marrow transplants.
- Comparing blood-vessel abnormalities before and after bone marrow transplantation, researchers noted none of the participants without vessel abnormalities developed narrowing or bulging after the transplant.
- A review of the brain imaging scans indicated that narrowing improved after the bone marrow transplant in 62% of patients with vessel abnormalities.
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