Both of the findings described are conditions that happened because something caused them. The hypodensity in a CAT scan occurs when something injured the tissue. In this case an ischemic event.
The second finding, the cardiopathy is a condition that can be caused by toxicity, in this case to anthracycline.
These are two quotes from articles found in the internet, and are listed below.
"Cardiotoxicity is a feared side effect that may limit the clinical use of anthracyclines. It may indeed affect the quality of life and survival of patients with cancer, regardless of oncological prognosis. This paper provides an overview of anthracycline-induced cardiotoxicity in terms of definition, classification, incidence, risk factors, possible mechanisms, diagnosis, and treatment."

What are some examples of hypodensities on CT?
On a head CT, hypodensity will be seen as areas darker than the brain. The appearance of the dark area will help us narrow the possibilities. Some abnormalities such as strokes, edema or extra water in the brain, masses, air or fat abnormalities will be hypodense. The radiologist may describe the abnormality as hypodense but will also provide a diagnosis or some possibilities.