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Fig. 5. —53-year-old woman with T1 N0 M0 invasive ductal carcinoma of
right breast and negative pathologic findings from axillary lymph node
dissection. Each node has two MRI features more frequently encountered in
metastatic nodes. Transverse high-resolution unenhanced T1-weighted image
shows two lymph nodes (asterisk) within axillary fat. In anteriorly
located 4-mm large round-shaped (axis ratio = 1) node (arrowhead), no
hilum is identified, whereas the more posteriorly located round-shaped (axis
ratio = 1) lymph node shows present hilum (arrow) (signal intensity
identical to adjacent fat) and subtly eccentric cortex.
