Fig. 5
A 46-year-old female patient with painless left breast lump from 1 month. History of cessation of lactation from 1 year. No response to antibiotic therapy. Mammography craniocaudal (a) and mediolateral oblique (b) views show global asymmetry in the left breast (BIRADS III lesion). Axial T1WI (c) and T2WI (d) images are showing an ill-defined area of architectural distortion with an ill-defined irregular area of liquefaction seen in the left retroareolar region. This is associated with thickened overlying skin and dilated retroareolar ducts with high intraductal signal denoting proteinaceous contents. Axial TI contrast-enhanced fat-suppressed image on dynamic sequence (e) shows rim enhancement with intense enhancement of the surrounding parenchyma and the overlying skin. Dynamic time-intensity curve (f) shows type III “washout” curve. The lesion shows hyperintense signal in DWI at b value = 800(g) denoting restricted diffusion, and low signal on ADC map (h) with measured ADC value 0.75 × 10–3 mm2/s. MRI findings: BIRADS IV lesion. Histopathological diagnosis: chronic breast abscess with surrounding periductal mastitis