1. B A
F/36, Rt. breast palpable mass : invasive ductal carcinoma, HER-2 (+)
(A) Indistinct margined, oval shaped, hyperdense mass in Rt. UIQ on MG
Combined with clustered pleomorphic microcalcifications
(B) Indistinct margined, oval shaped, complex echoic mass Rt. UIQ on US

2. C E D F
Before (C,D) and After (E,F) neoadjuvant CTx. : 3 cycle during 2 months
(C) Circumscribed, oval shaped mass in Rt. UIQ on subtraction MRI
(D) Hypermetabolic mass in Rt. UIQ on PET-CT
(E) Mass is disappeared after NAC on follow-up MRI.
(F) SUV of mass is decreased about 75% after NAC (4.4  1.1).
No measurable residual tumor is seen on pathologic result.