Here
https://www.immigration.govt.nz/new-...nation-results is an INZ page about the medicals, and I notice Have you had a copy of your results from the panel doctor? It seems you're entitled, as part of the original booking. Or INZ can give you a copy. I'm thinking, that ought to show what has been flagged as abnormal.
However, I've still got vague suspicions about all this. That email really IS from eMedical, is it? - not some other email address? If it doesn't ask you to click on a link and give details, I can't quite see how a scam could work, but it's odd...
In your place, I think I would phone INZ and tell/ask them about all this.