Click on image to view larger version.

Fig. 4B. 49-year-old woman with history of lobular carcinoma in situ
(LCIS). Sagittal T1-weighted contrast-enhanced image of right breast after
vacuum-assisted biopsy shows air (arrow) at biopsy site. Anterior
aspect of lesion has been sampled. Note washout of contrast material from
lesion and progressive enhancement of parenchyma, decreasing lesion
conspicuity. Histologic analysis of vacuum-assisted biopsy specimens revealed
markedly atypical ductal hyperplasia arising in background of radial
sclerosing lesions and columnar cell change, as well as LCIS involving areas
of mammary sclerosing adenosis. Surgical excision yielded low-grade cribriform
ductal carcinoma in situ, markedly atypical ductal hyperplasia arising in
background of mammary sclerosing adenosis and columnar cell change, and
extensive LCIS.