FIGURE 1  Postpartum contrast-enhanced helical chest CT scan showing an enlarged internal mammary lymph node (white arrow).

From the following article:

Palpable right breast mass in a pregnant woman

Matthew S Katz, Lidia Schapira, Mukesh G Harisinghani and Kevin S Hughes

Nature Clinical Practice Oncology (2005) 2, 218-221
doi:10.1038/ncponc0135