This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Women Imaging, Subject name: Radiology
[{'content': 'Progressive enhancement pattern for a lesion on Breast MRI shows \nSelect and explain. \nA. Type I curve, B. Type II curve, C. Type III curve, D. Type IV curve', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Breast MRI enhancement curves Following administration of Gadolinium there can be three possible enhancement kinetic curves for a lesion on breast MRI. Type 1 curve: progressive enhancement pattern Typically shows a continuous increase in signal intensity throughout time Usually considered benign with only a small propoion of (~9%) of malignant lesions having this pattern Type II curve: plateau pattern Initial uptake followed by the plateau phase towards the latter pa of the study Considered concerning for malignancy Type III curve: washout pattern Has a relatively rapid uptake shows reduction in enhancement towards the latter pa of the study Considered strongly suggestive of malignancy', 'role': 'assistant'}]