I was at a Cardiology Education Meeting where a case was presented of a patient receiving a monoclonal antibody for melanoma, who may have then developed myocarditis.
Onco-cardiology (or cardio-oncology) is the study of the cardiac effects of cancer treatment but also used to refer to patients who are cancer survivors with a cardiac condition or people living with both conditions.
Though not a new term, I don't remember coming across it before.
Here is some introductory reading:
Some recent freely available articles (with links to PubMed):
Cardio-Oncology: An Update on Cardiotoxicity of Cancer-Related Treatment. (review)
Cardio-oncology: what you need to know now for clinical practice and echocardiography. (review)
Evaluation and management of patients with heart disease and cancer: cardio-oncology. (review)
Onco-cardiology: the time has come.
An update on cardio-oncology.
There is also a review from JAMA Cardiology (not free).
The American College of Cardiology and American Society for Clinical Oncology have pages about onco-cardiology.
Then there are Canadian guidelines on the evaluation of cardiovascular complications of cancer therapy.
And a freely available 2013 European Heart Journal article about cancer drugs and the heart.
(All links were checked on 6th February 2018)