Danish to English Medical Medical: Cardiology

A cardiac patient had coronary angiography.

There is atheromatosis, some stenosis of the coronary arteries, and also moderate aortic valve stenosis, which are described and then there's the following sentence: HK er set med.

Does HK here refer to "højt kolesteroltal", or does it mean something else?

There are two large files; this is the only time this is mentioned and the patient is on statins.

Thanks in advance.