In Reply Dr Matuchansky raises concern about whether there was sufficient lag time between receipt of the last contaminated methylprednisolone injection and screening MRI for patients with MRI studies classified as normal or equivocal. The median time from last spinal or paraspinal injection to an abnormal MRI result was 87 days (range, 44-192 days). Matuchansky also questions whether the median lag time was shorter for patients with normal or equivocal results.
Malani AN, Singal B, Kauffman CA. Contaminated Methylprednisolone Injections—Reply. JAMA. 2013;310(16):1735–1736. doi:10.1001/jama.2013.277458