Case 31 Answer 3

NO! Probably benign, by definition, can only apply to findings that are asymptomatic (i.e. found on a baseline screening mammogram). The fact that a finding is PALPABLE implies that it is NEW. Now, it may have been there before and it is only now detected, but even this scenario implies that it may have grown to become palpable at this time. Any new solid mass is guilty until proven innocent!

Palpable solid masses are BI-RADS 4, Suspicious!

This cute circumscribed mass which looked so benign at ultrasound was a malignant Phylloides Tumor.

Which of the following is true of Phylloides Tumors?

• They are treated like breast cancer
• About 25 % are malignant
• They require at least a 5mm clean margin
• They tend to grow rapidly and recur locally