• # of abnormal nodes visualizes

  • When assessing response to NAT, compare largest node size to prior exams.

• Extranodal extension; indistinct or spiculated margins, matted appearance, and extranodal edema.

• For internal mammary nodal involvement: intercostal space, side, size.

• Abnormal nodes contralateral to known malignancy are rare w/ incidence of 6%. Aberrant or disrupted lymphatic drainage (after operative or radiation treatment) can result in contralateral nodal metastasis. 

• Intramammary nodes can be anywhere and are usually <1 cm in size and are considered axillary for staging puposes. Report morphology and size.

NORMAL

ABNORMAL

NORMAL

ABNORMAL