Progressive enhancement pattern for a lesion on Breast MRI shows: (A) Type I curve, (B) Type II curve, (C) Type III curve, (D) Type IV curve
Answer is A. 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