Critical Care Registered Nurse (CCRN) Practice Exam

What is a common characteristic of metastatic tumors detected in imaging studies?

1. They are typically benign

2. They are usually well-defined

3. They often display enhancement on imaging

4. They are always solitary lesions

The correct answer is: They often display enhancement on imaging

Metastatic tumors are known for their ability to spread from a primary site to other areas in the body, and one of the characteristics that can often be observed on imaging studies is enhancement. When a contrast agent is used during imaging, such as CT or MRI, metastatic lesions frequently show enhancement due to their vascular nature. This property arises from the tumor's increased blood supply compared to surrounding tissue, which can help in distinguishing these tumors from normal tissue or benign lesions. Enhancement patterns can also vary depending on the type of metastatic disease, the primary tumor type, and the characteristics of the area being imaged. Notably, this feature helps clinicians assess the lesions’ aggressiveness and potential for further evaluation or treatment. This understanding of vascularity and enhancement is crucial for effective diagnosis and management of patients with metastatic disease.