Fig. 1
From: Spontaneous regression of breast cancer with immune response: a case report
Preoperative imaging findings. a Mediolateral oblique-view mammogram. b Craniocaudal-view mammogram. A mass with a clear boundary is recognized in the right breast. c Ultrasonogram at first visit. A smooth, round mass is apparent in the upper-outer quadrant of the right breast. Subcutaneous fat tissue around the tumor appears as a highly echogenic, edematous layer. d Ultrasonogram just before surgery. Edema around the tumor has disappeared. e T1-weighted magnetic resonance imaging (MRI). f T2-weighted MRI. g MRI with early gadolinium enhancement A smooth, round mass with slight hyperintensity on T1-weighted MRI and hyperintensity on T2-weighted MRI. Only the marginal region of the tumor appears enhanced. h Ring-type dedicated breast positron emission tomography. A ring-shaped accumulation of 18F-fluorodeoxyglucose is evident in the right breast