Advanced Oncology Certified Nurse Practitioner (AOCNP) Certification Practice Test 2025 - Free AOCNP Practice Questions and Study Guide

Breast cancer is known to account for approximately 50% of heart complications in malignancy cases, primarily due to the prevalence of this cancer and the types of treatments often associated with it, such as chemotherapy and radiation therapy. These treatments can have cardiotoxic effects, leading to conditions like cardiomyopathy, heart failure, and other cardiovascular issues.

Additionally, breast cancer patients tend to receive specific therapies such as anthracyclines and trastuzumab, which are associated with an increased risk of cardiac complications. As breast cancer is one of the most common malignancies in women, the large population receiving treatment amplifies the overall incidence of heart complications related to malignancy.

The other tumor types listed, while they may also lead to cardiac issues due to various treatment modalities, do not contribute as significantly to the total incidence of heart complications as breast cancer does in the context of malignancies.