What Are Chances Of Developing Mild Cognitive Dysfunction While Treating Malignant Diseases?
Imaging findings not alarming.
Detailed Answer:
I read your question carefully and I understand your concern.
It is true that in patient treated for malignant diseases there is noted a higher likelihood of developing some mild cognitive dysfunction. Generally it is mild though, improves after the first year and doesn't affect the overall functioning. At times part of the what is thought as cognitive dysfunction is due to issues like anxiety and depression which make concentration and retaining information more difficult.
Now as for white matter changes, they are a common finding in many people, even in the absence of any other prior condition. They develop due to blood vessel changes with age, so the older one gets the higher the likelihood of getting them to some degree. Of course conditions affecting blood vessels make it more probable for blood vessels in the brain to be involved as well. So in a way with your history of coronary disease and at your age those changes are to be expected to some degree. It is hard to assess how "normal" they are, because simply saying to have scattered nonspecific foci doesn't say much about how extensive they are, could be mild, moderate or severe. If mild, shouldn't be causing any symptoms, if moderate or severe could be at the base of your cognitive dysfunction. From reading that fragment of the report it would seem the changes are mild, to be expected for your age and not to be alarmed.
As to what caused them, I would say they are part of the same spectrum as your heart problems, same vascular risk factors for heart disease are risk factors for ischemic white matter changes. So not exactly caused by the heart issues, just accompanying changes in blood vessels in other organs.
Regarding whether you'd be able to work again, if only mild ischemic changes I would say yes. However I haven't seen the MRI images, and since there are other factors at play neuropsychological evaluation would be a more objective measure.
I hope to have been of help.