When Jerry is talking to Uncle Leo on the phone and telling him to open the package (containing Jerry's broken stereo), the stereo is clearly visible in the background, intact and in Jerry's apartment.
Elaine is told she shouldn't be looking at her medical chart, and has to resort to sneaking her medical records out of her doctor's office, which gets her into trouble. New York state law requires all health care practitioners and facilities to grant patients access to their own medical records upon request.
She is also surprised to see her record show up unexpectedly at her new doctors office. It would be illegal for medical professionals to exchange information without her consent.