A 58-year-old woman developed agraphia and mild right hemiparesis approximately one month after undergoing coil embolization of an unruptured left internal carotid artery aneurysm. MRI performed on day 39 post-coil embolization showed multiple lesions in the white matter with signal hyperintensity on T2-weighted and FLAIR images in the left middle cerebral artery territory. The patient's cerebrospinal fluid exhibited an elevated protein level at 46 mg/dL; however, no other findings suggested another underlying disease. Corticosteroids were administered, and, by day 50 post-coil embolization, the clinical findings and abnormal features on MRI had improved. The patient was therefore diagnosed with contrast-induced encephalopathy after coil embolization.
A 38-year-old woman experienced numbness in both lower extremities and spastic paralysis a few months after undergoing living-donor renal transplantation. The patient was negative for human T lymphotropic virus type-1 (HTLV-1) antibodies prior to the procedure; however, she was diagnosed with HTLV-1-associated myelopathy (HAM) based on positive serum and cerebrospinal fluid antibody titers after the surgery. Because the donor was also positive for HTLV-1 antibodies, the infection likely originated from the transplanted kidney. Clinical and imaging improvements were noted following the administration of interferon-α. HAM has been reported to occur after living-donor renal transplantation; however, there are no previous reports of onset within such a short period.
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